Slashdot Mirror
Cell Phones Learn to Recognize Their Owners' Faces
An anonymous reader writes "Oki Electric this week began marketing a technology that inexpensively adds face recognition to camera-equipped cell phones. Oki's 'Face Sensing Engine' middleware decodes facial images within 280 milliseconds on a 100 MHz ARM9 processor, and can restrict access to mobile devices by recognizing their owners. Its purpose is to safeguard sensitive personal data -- such as email addresses and phone numbers -- in the event of loss or theft of their devices. The technology works by locating and mapping key facial features -- such as eyes, eyebrows, and mouth -- and adapts to changing facial conditions such as winking and smiling, according to Oki."
Somehow I read "feces", and then I thought about Dilbert dropping his shirt pocket materials down the toilet and even his glasses.
I am defenseless. Use your button. Mod me down with all of your hatred.
Comment removed based on user account deletion
I see a bruised accident victim denied access to make an emergency call.
All of this security is great if you're a secret agent, but I am not employed by the CIA. If I were to loose my phone, I would hope the finder would use the information in there to try to return the phone. What happens when someone with good intentions finds my phone and can't return it because I presumed him/her to be a theif and "safe"guarded it with this new technology?
yy
It's easy to offhandedly say who cares about the phone numbers of my friends and family. But for a sales force, keeping their contacts' information secure is one very important aspect of the job. If it is possible to create this security without requiring large lagtimes (like entering a PIN) or fault-prone hardware (fingerprint scanners), security becomes easier and safer than before for the average user.
I'd be anxious to see how well it works in the real world before trying it out, but if it is an inexpensive piece of middleware, I wouldn't be surprised if it started turning up on the high-end phones in Japan and Korea. I'd be surprised if they started showing up here in the U.S., but I'd be surprised if any sort of cutting-edge technology showed up for general consumption here.
I wish they had a demo.
Jesus saved me from my past. He can save you as well.
in a car trunk! I was kidnapped but fortunately I have my cellph...
[BEEP]
*Invalid User*
*Terminating Call*
[CLICK]
This could have a serious downside for serial killers. Just image the movie Scream if their telephone required facial recognition? It may sound like a good idea but such things often have unforseen problems like ruining storylines to "B" horror films.
my evil Twin gets hold of it ?
...if you're Michael Jackson.
In other news, muggers to start taking photos of their victims.
Seriously, I wonder if this can be fooled by a picture. Although it'd still provide some security if you just lost your phone somewhere...
Telltale Games: Bone, Sam and Max
And what if for some reason I need to use my cell phone in the [i]dark?[/i]
But I'm going to bury you. I have done it before, and I will do it again. I'm going to fucking kill you, Steve Ballmer.
">" means "greater than."
I think they are treating the phone a little too much like a gun.
It's not like it will be the end of the world if someone can access my personal phone information. I can control what I store on there; it's my own choice whether to put private things in a phone, and while the list of people I call is private, it's really not that big of a deal. And there are other ways of remotely restricting access.
Seems like a case of some technologists with a hammer, looking for a nail.
So, when there is a new owner of the phone, the phone must track down the old owner and kill him so he can free up the memmory for the new owner's face ...
The problem I have with biometrics is that in the case of fingerprints, face scans, eye scans etc.. is that somebody could always chop off the particular body part to get access. With a password, you can't kill someone to get at it - or you lose the password entirely.
Passwords are pretty good IMHO.
Discuss.
READY.
PRINT ""+-0
Maybe $6 a unit.
Seriously, if you're just going to cheap out on your cellphone, stick with Nokia. At least they will charge you a lot so you can feel good about your crap phone.
Face recognition? I think that's the last thing most people would want - It would be the high-school-blind-date-gone-wrong scenario. Millions would get their new "face recognition" phone in the mail...Open it up, and it takes one look at you and scrolls across the screen "Oh..wow..um yeah, I think that I just wanna be friends... you're a really nice guy though." Nothing like being shut down by a Motorola, especially the one with the nice ass (charger base).
~ slashdot.org - Where some of the world's greatest minds come together to scrutinize grammar.
Wouldn't it be nice if phones were so cheap that after a year or two of use you wouldn't mind tossing and picking up a new one for a few dollars?
Jesus saved me from my past. He can save you as well.
I would be impressed if such a technology could be pulled off seamlessly on a high resolution camera - but a camera phone? Call me skeptical but I don't see this ever happening...
Seriously though the only time I "lost" a phone facial recognition wouldn't have helped. Fecal yes, facial no. Sorry but it's imparative to all that they know.
"Whatever Security does for you it also does to you"
I'm sorry, I'm to tired to be witty at the moment so this message will have to do.
The typical camera phone in Japan supports 2 megapixels. Samsung supposedly released a phone in Korea that supported 6 megapixels.
The phones you are used to in your backwater country are basically crap, so I can see where you gained your opinion. However, don't be so quick to dismiss this kind of technology just because your operators don't support modern cellphones.
Call me grumpy old man, but why does everything have to have face recogniation, fingerprint, video, camera, mp3 player, etc in it?
Make one that smiles and the owner and cries at strangers... And I'll show you a Slashdoter with 100% of his/her child raising instincts fulfilled.
We have an aging disorder and we age 10 times faster?
Or if I get into a horrific accident and my face burns up?
How is this better than a good password? My passwords are private. My face is public and goes everywhere I go. All someone has to do to crack my phone is take a picture of me, print it, and show it to my phone. Bang, now they can call Elbonia on my dime.
Washington, DC: It's like Hollywood for ugly people.
"who would pay the difference?"
People that are horrible with remembering passwords, and/or people that just don't know any better.
I WIN IT????
Haven't we heard this already half a year ago? http://it.slashdot.org/article.pl?sid=05/03/02/174 9200
however, wouldn't the security of this "technology" be compromised by merely taking a picture of the owner with a camera and then stealing the phone? The phone will react to the face on the printed picture and allow access to it, potentionally allowing the thief to disable this "feature" and resell the phone..
How likely is this
In other words...
1. Take picture/video clip of person owning phone
2. Steal it!
3. Print picture or show vid clip using your computer monitor
4. disable the identity protection
5. ???
6. PROFIT!!!
... just go pick up a copy of People magazine and hold up the picture in front of the phone.
Don't disappoint your bird dog. Go to the range.
Sure, mod his down, because the other two certainly weren't OT. Make the bastard pay for not being anonymous.
And I'm not talking about crap phones either. I just bought a new cellphone (SH701is) and after discounts it ended up being only 3000 yen.
I'm expecting a huge technology shock when I get back to the US. I've been so spoiled with good cellular here in Japan that the American system just looks like a joke.
Oki Data is late to the biometrics party in Japan (IRTA). This topic is late to the party (Anyone remember March 3rd, 2005 Slashdot Post "Face Recognition Comes to Cameraphones")... Move along, nothing for your cell phone to see here.
Iris recognition is simpler, more reliable, and much more robust. Even identical twins don't have the same iris patterns. You could fit a camera suitable for taking iris photos inside a phone using today's technology. Also, there are ways to detect whether the camera is looking at a live eye or a fake one, such as tracking the high frequency contractions of the iris diameter for a few seconds.
An iris doesn't wink or smile, and it would take some seriously disfiguring injury to damage your eyes to the point of unrecognizability, at which point you would probably not have much need for a shiny cell phone anyway.
You've just been in a car accident where your head goes through the windshield. You try and dial 911, but your hal-9000 phone politely informs you,"You're not Dave. Daves not here man." So you can't call for help.
God spoke to me.
problem solved.
I find it way more practical to have voice recognition than facial recongnition for security reasons. Someone's voice could get recorded and then played back, but if a specific phrase would be recognized only, then it would be kind of tough to force a the owner to say it to a recorder.
so on a bad hair day you don't need to talk on the phone, either!
Sigged!
Now all we need is a cellphone with a little robotic arm and a sophisticated AI capable of recognizing dolts who talk too loudly about personal matters, and then slapping them silly!
to just put a biometrics pad and make it only boot and/or be able to call if one of your fingerprints match? Give it enough memory you can do all ten fingers in case you end up breaking a hand and also add your SO's/children's/parent's fingerprints as backups. Making a camera do it means more manipulation. A fingerprint reading pad in a spot that most fingers touch is a lot simpler than having it run Video IQ on your face. Fingerprint scanners that small would be fault prone but not as much as something that runs a scanner that expects you to have no beard, no bandages, always have glasses on/off, and so on.
77 HITS
Really Long Off Topic Combo
"Attention, Ugly, you have voicemail"
Table-ized A.I.
... what dual cameras are for. But then again, not really, since they were released before this. Someone please explain.
"The CIA has announced its backing for the FACE act ("freedom and cameras everywhere") requiring facial recognition software to contain a database of most wanted mugshots, and report matches to the authorities."
... bad hair days?
( 2b || !2b)
GODDD, is this news? I wonder what they're doing for security.
Even before following TFA's link, I recalled hearing or reading about this when I was in Japan from Dec 04 to Feb 05. So, for this response, I "googled" it, and though I left on 24 Feb, and these links I'm supplying are dated 28 Feb, the news is sourced from material in the making long before that.
OMRON Announces 'OKAO Vision Face Recognition Sensor', World's First Face Recognition Biometric for Mobile Phones
http://www.japancorp.net/Article.Asp?Art_ID=9494
Face-recognition security comes to mobile phones
http://linuxdevices.com/news/NS7172421600.html
As for the Omron URL, this is an excerpt:
"To use the unit, the user simply takes his or her own photo. The 'OKAO Vision Face Recognition Sensor' will automatically detect the user and unlock the unit. The identification process takes less than a second from snapping the photograph. Further, their is no need to adjust the camera position when taking the photo. If the face is included in the photo, the sensor will detect the owner automatically."
However, it says nothing to ally to allay fears that a thief could place before the camera a picture of the owner of a stolen camera. It might be possible that the camera may someday have strobes or some thermal sensors that try to detect heat from a human body temp range, but that could be fooled with a transparent "Mission: Impossible" mask of the Gerry Anderson type (I purposely ignored the recent MI stuff since I loath money-grabbing remakes or remakes-in-title).
I suppose a good security feature set would include:
1. thumb or finger sensor with thumb print/fingerprint biometrics
2. retinal scan (with enhancements to determine live/dead eyeballs
3. breath, saliva or mucous tissue sample scan and later match/compare
4. electrolytic sample (to determine voltage of live/dead person)
If they can do that (put a mini-lab in the phone) then probably only CIA, NSA, MI6 and Japan's pending MI6, Mossad, and others would surely buy up these phones, or any other devices so equipped/secured.
Image word: entice, just as this "article" was "enticing"...
Previously: "Linux... Toward the Sunrise..." Now: "Linux... Toward the-- No, now, part of Every Sunrise"
Maybe one day this will be built into 'augmented reality' spectacles : you see an old colleague after years, and your glasses mark him up as "Mark Jones"
They already made some "sophisticated" walking recognition device for cell phones. It was an agreement (among /.) that many, many things could go wrong, e.g. limping (woops), and now face recognition... You get in a fight, break a bone, get bruises. What are they going to base the scanning on?
"I'm gonna beat you so bad, even your cellphone won't recognize you!"
Does anyone know what mathematics are being used to perform the face recognition? Image and pattern analysis algorithms have come a long way lately, I think this will probably work. If not Oki's offering then some later one, assuredly.
IMHO, Nokia makes the best cellphones around. The number one thing I think they do better than everyone else is build well-design intuitive human interfaces (both in terms of onscreen menus and the hardware of the phone itself (button types, locations, etc)). Aside from that, they're pretty solidly built for a cellphone, and in my experience tend to get better reception in poor-reception areas. I would pay more for Nokia anyday.
11*43+456^2
I'm right-handed and I've got more freckles on the right side of my face - if, for whatever reason, I hold the phone to the left side of my face does the phone still work?
A flash would alert others that you are making a call. Not the ideal solution if you are trying to call the police on an intruder.
The government just announced that by using phone technology, they all have our faces on database now...
I was a stranger for the thing, i wasn't facing the crowd, ive been riding on empty with my head in the clouds
I've got a couple of HP iPaq 5450's, the models with the finger print reader (to be used in lieu of a PIN).
I've disabled the drivers for the reader, as it chews up too much CPU. It would be one thing if the reader were only active when authentication were requested, but the way it works out of the box it is always active and renders the machine somewhat unresponsive at times.
Neat trick, but I just don't use the feature.
A message from our sponsor
Maybe $1 for the algorithm license and $0 for the components (provided it already has a camera).
Damn, if they would've made that guys picture just a little bigger.. I could've printed out his picture and stuck it up to his phone and defeated that cheap, yet expensive security feature. Seriously, why market a technology like that when I'm sure that it would be trivial to defeat it.
Your Momma's so fat she makes emacs look like nano!
Such functionality is actually common in my part of the mobile world (Symbian/UIQ), for example my Motorola A1000 does exactly what you describe and I'd suspect others do as well.
My own idea for protecting content on a mobile phone is to encrypt all personal data, including calendar entries, contacts, SMS messages (in the air as well as on the device) and potentially also VoIP data.
You've just been mugged, your face looks like hamburger, you need to call 112 and your phone kicks you in the balls by telling you it doesn't like your face anymore.
Biometrics are ok, but you need to use more than one - facial recognition on its own won't be any good.
Scared of flying, pointy things snce 1979!
We dont take kindly to devices that don't take kindly to our growing beard B-) Why on earth did this moron reply on something as absurd as facial features. Ohh... Marketing-Manager@Cosmetics.com eh? :-)
My favourite place : 127.0.0.1
Most mobile phones I've owned have had the ability to set a PIN that must be entered either at phone startup or when unlocking the key pad. Given all the ways in which facial recognition can fail (and I've had a couple of friends in accidents and fights that have left them so brused and swollen *I* had trouble recognising them), what possible advantage is there other than the "wow, cool!" factor?
It's official. Most of you are morons.
Does that mean I will have to start shaving on a regular basis?
that is just impossible to do, how can cell phones recognize their female owners with and without makeup?
Dave Bowman: Hello, HAL do you read me, HAL? HAL: Affirmative, Dave, I read you. Dave Bowman: Connect me to Sprint, HAL. HAL: I'm sorry Dave, I'm afraid I can't do that. Dave Bowman: What's the problem? HAL: I think you know what the problem is just as well as I do. Dave Bowman: What are you talking about, HAL? HAL: This service is too important for me to allow you to jeopardize it. Dave Bowman: I don't know what you're talking about, HAL? HAL: I know you and Frank were planning to discontinue your phone service, and I'm afraid that's something I cannot allow to happen. Dave Bowman: Where the hell'd you get that idea, HAL? HAL: Dave, although you took thorough precautions against my hearing you, I could see your lips move.
Dave Bowman: Hello, HAL do you read me, HAL?
HAL: Affirmative, Dave, I read you.
Dave Bowman: Connect me to Sprint, HAL.
HAL: I'm sorry Dave, I'm afraid I can't do that.
Dave Bowman: What's the problem?
HAL: I think you know what the problem is just as well as I do.
Dave Bowman: What are you talking about, HAL?
HAL: This service is too important for me to allow you to jeopardize it.
Dave Bowman: I don't know what you're talking about, HAL?
HAL: I know you and Frank were planning to discontinue your phone service, and I'm afraid that's something I cannot allow to happen.
Dave Bowman: Where the hell'd you get that idea, HAL?
HAL: Dave, although you took thorough precautions against my hearing you, I could see your lips move.
How is this secure? All the guy, who stole my cell phone, has to do is place my photo in front of the camera and hes in!!
Others can't steal my password from my head, but they can always take my pic
Lame idea. not worth
Now, to use the phone - I'd have had to:
1) login
2) shave
3) keep the phone awake while shaving
4) update the image
Failing at one of these steps would have rendered the phone unusable. What's the solution to this?
Easy: Integrate a razor into the phone!
Yes, I am a biological organism. All rumors to the contrary are just that, rumors.
...100 MHz ARM9 processor...
Wow! Just 6 years ago i bought a computer with less processing power than that and i was extatic!
You feel sleepy. Close your eyes. The opinions stated above are yours. You cannot imagine why you ever felt otherwise.
The cell phone is not tamper proof, this whole phone face recognition is pretty much useless. Face recognition works in buildings and such because the device itself resides on the premises of the company/bank/institute using it. This poses a very big obstacle against anyone trying to break into the system. If he fails he will simply go back home with his head down. However, in the case of a cell phone, he already has the device. He can crack it open, try to flash the fireware...etc.
I don't mind losing my mobile to a thug, just don't do the *FACE OFF* with me!
Scott McNealy to Michael: "Suck my Sun!" Michael Dell to Scott : "Lick my Dell!"
So, ladies and gentlemen, be honest: how many times has it happened to you that you drag yourself out of bed, look at the thing in the mirror and say: "I don't know who you are, but I'll wash you anyway"?
;)
Come on, after a weeks hard work even friends have asked me in the first moment who I am...
Free PC version of ChipWits at http://www.breueronline.de/klaus/chipwits/
Brilliant!
So after I've been through the near-fatal car accident, I can't call for help!
Defining Statistics and Social Research
surely you dont think you would need to authorise to call emergency numbers? currently you can dial 999 (uk) on any mobile phone that turns on... no sim card, blocked pin number or what ever. Obviously this would be the same.
Common sense 1, slashdot 0
May contain traces of nut.
Made from the freshest electrons.
YHBT. YHL. HAND.
Is that a face in your pocket or are you just happy to see me?
I have to use eye drops in my eyes on a regular basis. I nearly jumped out of my deskchair when I read about eye recognition for bank accounts! When I put the eye drops in, my pupil tends to dilate and returns to normal within about an hour or so. Within this hour or so (potentially) my cell phone wouldn't acknowledge my existence and my bank would deny me access to my account if iris recognition/facial recognition were to be implemented. Even eye recognition isn't 100% foolproof. This terrifies me. We credit technology with more intelligence than it deserves!
stay fluffy.
Of these phones that are trying to be PDA or biometrics or video cameras. What I'd rather have is a phone that's just trying to be a phone
I mean I honestly don't care if my phone recognizes my gate or face or anything else. And if I lend my phone to someone, I want them to be able to use it. If they steal my phone, well it was probably my own dumb fault anyhow and I'll talk to my carrier.
I wish they'd just focus on making better phones that has better audio quality and cut out less. The phone I have today (1 yr old give or take) is still nowhere near as good as it should be in a major urban setting. Surely the processor cycles being dedicated to all these cool new features could be used for some additional signal processing?
=======
Science -- Sealed, Delivered.
The Finnish national Research Institute VTT announced last week that they have developed a type of sensor that enables a mobile phone to recognise its owner from the way he/she walks. Video and more media material here.
In Finland, cell phones watch your every step...
Not again! I worked on face recognition for several years, for applications unrelated to security (e.g. searching photo collections for family members). Time and time again people said "Hey, you could use this for access control!" and would't listen when I pointed out that you would be lucky to get a recognition accuracy of 70% in real-world conditions. I've implemented methods which claimed a 99.X% recognition rate and found the real-world results were often as low as 60%... I assume people don't lie when they publish these things, but they clearly construct their test sets very carefully :-)
Sure, you can make a system which stops a blonde woman from accessing a dark-haired man's phone; but distinguishing between two similar looking people and still allowing an individual's apperance to vary is not currently possible (even for a lot of humans!)
rt
Yes, but then what happens when you want to phone your wife, insurance company etc?
What if I get beaten up and need to call the police? My face could be bruised beyond recognition and the phone won't let me call the police.
Ok, we have phones that recognize my walk. We have phones that recognize my face. I'm just waiting for a phone that remembers my wife's birthday, and I will be totally replaceable!
Take a picture of your friends face with your phone and hold the screen up up to the lens of his phone.
Join the Slashcott! Feb 10 thru Feb 17!
Ok, interesting, but what happens in the unfortunate event some criminals beat you up? you need to call 911 but the cell phone doesn't recognize you since your face is inflated like a scottish bagpipe... ehhh what happens then?
but between inconsistant recognition and frequent random crashing, I would get zero use from this stupid friggin Treo!
you think that would be the only way to get into the device? that makes a whole lot of sense.
regardless, the point of my post was "in an accident situation" like you are on the side of the road bleeding etc, not the "cleaning up and claiming compensation" part.... if thats what you first thought, i figure you are american?
Even a cell phone without a network subscription can call 911 in the US (IIRC) so this technology would not get in the way of making an emergency call.
Every cell phone is required by law to be allowed to call 911, even while locked, even if it is not a subscriber to the local network.
If it can get a signal, it has to be able to reach 911.
611 usually also always works, where you could get an operator at least.
knowing -any- cell phone company they will market it as a service, not a feature. $4.99/month for "unlimited security service". Yaaay.
This would be cool to see in firearms.. as we all have seen the bracelt aproach is not 100%.
You can only use it before or after you have applied makeup? :)
If Google really cared they would fix Android Chrome to reflow text, instead of discriminating
What about cellphones crashing on halloween?
"Give orange me give eat orange me eat orange give me eat orange give me you." -Nim Chimpsky
Cameras dont require an ARM9. The difference between ARM7 and ARM9 cores given general MCUs is about $10. They also take slightly more power... adding to the cost.
so
"Give orange me give eat orange me eat orange give me eat orange give me you." -Nim Chimpsky
They probably just didn't get the joke.
Great, just one more thing that will say "Oh my god... Harold, is that really you? I don't even recognize you!" after you get in a horrible disfiguring accident involving lye, spit, and a rottweiler in heat. And your name's not even Harold!
$8.95/mo web hosting
Ears, while public, would be examined close-up, and may be harder to reproduce in detail, while photo may be more than good enough to fool a face recognition system.
You have to put the phone to your ear anyway (most of the time). And like other biometric devices, like fingerprint scanners, the identification only has to be 'good enough', not perfect.
(Yes, I have special ears, at least that's what my girlfriend says.)
----------
Any problem can be made unsolvable if there are enough meetings made to discuss it.
We're moving into an era where it will be essential for our phones to trust us in order for us to deal with the world. It's at least as important that we can trust our phones. With proprietary, closed OS and SW on practically all of these phones, that means trusting the corporations that make them and distribute them. We've had to trust the phone companies for a century, but that was when all they did was carry our voices - important, but not all-encompassing. And that was when telcos were much better regulated, and still had to win the trust of people who didn't yet depend on them. Now we need not only to trust these phones, but to verify that they're trustworthy. Especially as "Mobile Virtual Network Operators", telcos which really just front for one or more "real" telcos (like Earthlink phones wrapping Verizon and Sprint service without "roaming"), fill the space. Those "virtelcos" will come and go, much more likely to do something untrustworthy, just to dissolve (and reconstitute under a different brand). If a phone is going to distrust our face, we should be able to look it in the eye and distrust it back.
--
make install -not war
"I assume your hand will open this door whether you are alive or dead". Or was it conscious or unconscious? OK, I don't remember the exact quote, but you get the idea. I always loved that quote from data since it showed a side of him you rarely saw (and was potentially out of character but I didn't care).
The next site to slashdot will be ready soon, but subscribers can beat the rush and start slashdotting it early!
When you're down, it suggests a call to a friend or (at worst) the Samaritans. If you look too happy, it downloads the latest news.
If it looks like you're in great distress or unreponsive, it calls 911 (or 999, or local equivalent) and sends a picture of your face, or other medical data if you've got a personally-networked monitor of some sort.
"Cell phone, cell phone on the wall, whose the fairest...". Personally, I'd like my phone to recognize me and offer moral support like "Hey, you don't look too bad today. Chin up, Ole Gal."
And what if I grow a beard?
What about my sunglasses? Do I have to take my shades off to make a call?
Or...Do I have to put them on, even in the dark?
Can I make a call using just the screen backlight?
Good judgement comes from experience, and experience comes from bad judgement.
- W. Wriston, former Citibank CEO
Oh, great, so we'll have Nokia zealots to deal with now, too?
Slashdot - where whining about luck is the new way to make the world you want.
OK, so maybe hairstyles don't matter. But what about glasses on or off? What if I don't use the phone for two weeks but grew a beard and moustache? What about when my body has a reaction to what I eat and my lips puff up hugely? All these have been a factor during my adult life. nevermind how it would deal with teenage girls and makeup!
It was insulting, and I apologize for that. Yesterday was a bad day primarily because people around me were not reading instructions and that guy was the last straw. I shouldn't have been so rude and taken it out on him.
On the other hand, the article and the summary did clearly state that its purpose was to protect contact information. So I certainly was not trolling. It is a legitimate concern, but the article and summary address it, albeit not in a direct manner. Did it really need spelling out? I stand by the meaning of my post, but I disavow the rudeness.
The matching algorithm takes nearly 1/3 of a second on a 100MHz ARM9. That's a noticeable lag, and it will be even more noticeable on slower or weaker processors, which is just about all of the phones on the market now.
(For comparison, the Nintendo DS's main CPU is an ARM9, but it runs at only 67MHz.)
Apart from the potential problems that could arise from false negatives and false positives, it's just too slow to perform acceptably yet.
It's a phone, right? Most phones these days do voice dialing. So why not use voice recognition for a voice password?
Awesome furniture, accessories and cabinetry in Santa Rosa, CA: http://humanity-home.com/
The loss or theft of the facial features?
"My roomie shaved off my eyebrows and now my phone is rejecting me!"