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Researchers Can Identify You By Your Brain Waves With 100% Accuracy (business-standard.com)

An anonymous reader writes: Scientists have developed a new system that can identify people using their brain waves or 'brainprint' with 100% accuracy, an advance that may be useful in high-security applications. Researchers at Binghamton University in U.S. recorded the brain activity of 50 people wearing an electroencephalogram (EEG) headset while they looked at a series of 500 images designed specifically to elicit unique responses from person to person -- e.g., a slice of pizza, a boat, or the word "conundrum." They found that participants' brains reacted differently to each image, enough that a computer system was able to identify each volunteer's 'brainprint' with 100% accuracy. "When you take hundreds of these images, where every person is going to feel differently about each individual one, then you can be really accurate in identifying which person it was who looked at them just by their brain activity," said Assistant Professor Sarah Laszlo. One thing the paper doesn't talk about is the effect of time on the accuracy of the system. People may perceive different things when looking at the same picture a year later, for instance.

89 comments

  1. Buying Reynolds Stock by zenlessyank · · Score: 4, Funny

    As the tinfoil sales are going to be through the roof.

    1. Re:Buying Reynolds Stock by Anonymous Coward · · Score: 1

      This is why you never see people wearing tinfoil hats. Why can't sellers sell them at street level like normal businesses?

    2. Re:Buying Reynolds Stock by Anonymous Coward · · Score: 0

      The Fibs are going to sue you unless you give them a backdoor to your brain

    3. Re: Buying Reynolds Stock by Anonymous Coward · · Score: 0

      True.

  2. 100% accuracy...with 50 people by xxxJonBoyxxx · · Score: 5, Insightful

    Like fingerprints and other biometrics, will this fall off a bit at scale?

    1. Re:100% accuracy...with 50 people by Anonymous Coward · · Score: 0

      Why don't you ask some of the researchers who sold out all their friends and neighbors fifteen years ago by pursuing this idea and lying to everyone else about it? I certainly remember these headlines from before 9/11. IIRC, it's part of the kind of thing that made people hate America so much.

    2. Re:100% accuracy...with 50 people by Immerman · · Score: 3, Informative

      Indeed. My statistics are rusty, but with only 50 participants it seems unlikely you could legitimately claim a general accuracy above maybe a mid-to-high 90 percentile. Even then you'd be talking about the general accuracy within a 50-person group. Take a 500 person group and the average difference between two sets of brainwaves would naively be expected to be about 1/10th the size, and the minimum difference would likely fall far faster than that. Take a more generally useful set size, like say the population of a major city, and I seriously doubt they could uniquely identify anyone but the most abnormal.

      --
      --- Most topics have many sides worth arguing, allow me to take one opposite you.
    3. Re:100% accuracy...with 50 people by GameboyRMH · · Score: 3, Insightful

      I'm wondering if it suffers from some of the other problems that plague biometrics - is the "brainprint" unhashable, and will it change with age?

      --
      "When information is power, privacy is freedom" - Jah-Wren Ryel
    4. Re:100% accuracy...with 50 people by JoeMerchant · · Score: 1

      The counter-argument is that you increase the number of stimulus pictures until you regain the desired accuracy.

      The counter-counter arguments are manifold: pictures -> blind subjects? Auditory responses are likely much more problematic to read and distinguish (audible signal response swamping any individual cognitive responses). 500 pictures, really? Who has time for that? How accurately do the electrodes need to be placed every time the test is run? Don't you have better things to do with your time and ANOVA software?

    5. Re:100% accuracy...with 50 people by Anonymous Coward · · Score: 0

      and then the use of this will be limited to cases where someone can't just fake the brainprint.

    6. Re:100% accuracy...with 50 people by Quzak · · Score: 0

      100% accurate with 0.000000000000000001% of people, 25% of the tiem. Derp. Look maw, we is dewing science

      --
      Support your local school shooter, give them your firearms.
    7. Re:100% accuracy...with 50 people by Khashishi · · Score: 2

      More like sqrt(1/10) the size.

    8. Re:100% accuracy...with 50 people by Quirkz · · Score: 3, Insightful

      Or mood. Or sobriety.

    9. Re:100% accuracy...with 50 people by Anonymous Coward · · Score: 1

      So what they're saying is that this is pointless and only certain people will end up using it? The article points out only "high security" locations such as the "Pentagon" and "other high security" locations. So...what they're going to use EEG's as people walk in and out of a building?

    10. Re:100% accuracy...with 50 people by Anonymous Coward · · Score: 2, Insightful

      Or drugs, both illegal and "prescribed". Both voluntary and forced.

      --sf

    11. Re:100% accuracy...with 50 people by Immerman · · Score: 1

      How do you arrive at that?

      As I see it, if you have P data points ("mind prints") roughly uniformly distributed within an N-dimensional measurement space (the optimal situation for discretely identifying them between measurements) of N-volume V, the average N-volume around each point will be roughly V/P. Double the number of points, and you halve the volume per point.

      I suppose that would mean that the average linear distance between adjacent points will fall with the Nth root of P, but unless the "margin of error N-volume" associated with your measurements is much less than the per-point volume you're rapidly going to get a whole lot of mis-identifications. After all, your points will *not* be uniformly distributed, and you're up against the birthday problem as well (you only need 23 people in a room to have a 50% chance that two of them will have the same birthday)

      --
      --- Most topics have many sides worth arguing, allow me to take one opposite you.
    12. Re:100% accuracy...with 50 people by Anonymous Coward · · Score: 0

      My question is will it work on actual socio-paths that have no "feeling"?

    13. Re:100% accuracy...with 50 people by RenderSeven · · Score: 1

      Yes but the same effect with fewer but more specific pictures. Pictures of family or places the subject has visited should get a signature response, and since this is supposedly for high security verification then selecting a specific gallery to validate a target person shouldnt be a problem.

    14. Re:100% accuracy...with 50 people by Anonymous Coward · · Score: 0

      It would depend? First off I don't think it's true that sociopaths lack all feelings - they just lack empathy for other humans/creatures. So what might evoke disgust in most people could provoke curiosity, indifference, happiness etc in a sociopath. Those are still "mind states" and, assuming the method is valid, they should have a distinct signature. Assuming the responses are consistent I don't see why the proposed method would be any more or less likely to work in sociopaths than anyone else.

      That said, given the size of the dataset, who knows...

    15. Re:100% accuracy...with 50 people by NicknameUnavailable · · Score: 0

      Forget scale, this probably falls off over time. One traumatic event, drug use or epiphany could likely screw the results of an individual for life.

    16. Re: 100% accuracy...with 50 people by Anonymous Coward · · Score: 0

      Or this week pizza makes me excited, but next week my wife gets killed by a drunk domino's pizza driver and my brain print is wildly different?

    17. Re:100% accuracy...with 50 people by michelcolman · · Score: 1

      I have a much simpler system that just uses an ordinary weight scale and Can Identify You By Your Weight With 100% Accuracy! I tested it here at home on our family of four, and it correctly identified each of us every single time!

    18. Re:100% accuracy...with 50 people by parkinglot777 · · Score: 1
      Indeed. My statistics are rusty, but with only 50 participants it seems unlikely you could legitimately claim a general accuracy above maybe a mid-to-high 90 percentile...

      Indeed, you would be correct under an assumption that the samples are equally biased/unbiased. I would actually want to see more than just one test. I would want to see them doing the similar research on 25 identical twins from various region as well. That would at least address whether their method is accurate and how well it does.

    19. Re:100% accuracy...with 50 people by Khashishi · · Score: 1

      I assumed a Gaussian distribution, not a uniform distribution.

    20. Re:100% accuracy...with 50 people by Immerman · · Score: 1

      That only makes things worse, as the average distance between adjacent points is much smaller due to most points being concentrated within the peak. I don't think it appreciably changes the rate at which that distance scales as the number of points increases though - in the one-dimensional case you should still get 10 times as many points crammed into the same range, so that on average each point can only exclusively claim 1/10th the range.

      --
      --- Most topics have many sides worth arguing, allow me to take one opposite you.
  3. That is both scary and cool by Anonymous Coward · · Score: 0

    Reading the headline I thought they could read my thoughts. Developing some device to mimic these brain waves is going to be hard, so that is cool. Plus the changes in reactions might actually be a plus, if you can track it. Just concerned this will actually be used to read thoughts/emotions about things ... also dramatic experiences may lead to you being locked out.

  4. False negatives and false positives by gurps_npc · · Score: 5, Interesting

    100% accuracy can be misleading. Are they talking 0% false negatives, 0% false positives, or both?

    I could easily see a situation where it has 0% false positives, but a high false negative rate.

    That is, I could claim that my "Presidential Identification" is 100% right if I said no one I met was the President of the US. No false positives because I never said anyone was President.

    Similarly, someone could do it the other way around, claiming everyone was the President and have 100% accuracy because I identified every single President in the sample.

    --
    excitingthingstodo.blogspot.com
    1. Re:False negatives and false positives by gweihir · · Score: 1

      It is just a 50 person sample. They are talking perfect accuracy for that sample, but that does not mean a lot, the sample is far too small for that.

      --
      Most ACs are not even worth the keystrokes to insult them. Be generically insulted by this and ignored otherwise.
    2. Re:False negatives and false positives by Khashishi · · Score: 1

      It would be dishonest to claim 100% accuracy for anything other than 0% false negatives AND 0% false positives.

    3. Re:False negatives and false positives by jfengel · · Score: 2

      I don't have the journal article itself, but the way I read the abstract, they mean 0% false negatives and 0% false positives.

      They did not, however, appear to test people from outside the group. That is, if I were to show up, it's unclear if it would identify me as not one of the sample. That still leaves a pretty substantial room for error, but it's a very good starting point.

    4. Re:False negatives and false positives by Anonymous Coward · · Score: 0

      No, it's not dishonest. If you actually read up on what accuracy mean, you discover quickly that it's not a very well defined term. That's why nobody in scientific fields ever should use the term accuracy, it's a marketing term. Any scientist (at least should) use a matrix of four values, I can't remember the correct names, but it basically boils down to true positive hit rate, true negative hit rate, false positive hit rate and false negative hit rate.

    5. Re:False negatives and false positives by Anonymous Coward · · Score: 0

      You're saying that marketing is not dishonest? If it wasn't then there wouldn't be a need for "truth in advertising" laws, now would there?

      (Also, some of the values associated with that TP/FP/TN/FN matrix are "precision" and "recall", mentioned here as useful search terms. And yes, much like how averages without standard deviation given are pretty much meaningless, "accuracy" alone and undefined is also meaningless. And so most "journalism" with only half the required numbers in it, isn't.)

    6. Re:False negatives and false positives by Anonymous Coward · · Score: 0

      50 people seems like an extremely small dataset. What was their actual algorithm? Did they extract features and train a classifier or just ask Fred from accounts if he could tell the difference? And assuming there was a trained classifier involved (which seems like a reasonable assumption) I assume they did a proper training/evaluation split, n-fold or similar? Did they repeat the experiment multiple times to ensure their features were consistent over time?

      When dealing with datasets that small it can be very easy to be led to entirely erroneous conclusions. Repeat on 100 at least and I'll start to take this seriously.

    7. Re:False negatives and false positives by Anonymous Coward · · Score: 0

      How is this technology going to work with the likes of Donald Trump and Sarah Palin?

    8. Re: False negatives and false positives by Anonymous Coward · · Score: 0

      One will be a flat line and the other can have the scanner easily seated by removing the hairpiece?

    9. Re: False negatives and false positives by Anonymous Coward · · Score: 0

      Sarah Palin wears a wig???!!

    10. Re: False negatives and false positives by Anonymous Coward · · Score: 0

      Until we shave her head and do an invasive cranialrectomy, we won't know for 100% sure.

      --sf

  5. Problem in search of Morty by sinij · · Score: 1

    If you don't want to be identified this way, just bring along Morty. Worked well for Rick.

  6. The Lights of Zetar by Anonymous Coward · · Score: 0

    I remember this being done in a Star Trek TOS episode called The Lights of Zetar to show that the aliens had possessed the mind of Lt. Romaine. Anyone else remember that episode? Parts of that episode scared the hell out of me as a kid and still freak me out to this day.

  7. If it's use for authentication by ddtmm · · Score: 2

    It will take about a 1/2 hour to log in

  8. 50 people, what a sample size. by Anonymous Coward · · Score: 0

    When they've imaged 10,000 with no two profiles that are even close to eachother, and decreased their testing criteria to something a bit less than having to show individuals 100 images per profile, then I'll give it some credence. However until then you can shove it in the bin with gait analysis, bite mark analysis, hair follicle typing, fingerprints and to a degree DNA. Techniques that are at best less capable than they have been portrayed and at worst complete garbage.

  9. Totalitarian Wet Dream by Anonymous Coward · · Score: 1

    This is just another of the many advances that will enable the creation of a complete totalitarian state sometime in this century.

    1. Re:Totalitarian Wet Dream by Anonymous Coward · · Score: 0

      Sure. It's very bad news for Russians and the Chinese. The Alex Jones crowd will go nuts over this, but they live in a paranoid fantasy-world.

    2. Re:Totalitarian Wet Dream by Anonymous Coward · · Score: 0

      And they keep getting proven right.

    3. Re:Totalitarian Wet Dream by Anonymous Coward · · Score: 0

      According to their delusions yes. Reality is something entirely different.

    4. Re:Totalitarian Wet Dream by GLMDesigns · · Score: 1

      Only if you keep expecting that a nanny state is the solution to the country's ills. Have the government do less and it will be easier to keep it in check. Have the government do everything and the most likely end result is a totalitarian state.

      --
      If you're scared of your govt then you need to further restrict its powers
      Vote 3rd Party in 2016 and beyond
  10. not me by Anonymous Coward · · Score: 0

    No, they can identify the 50 people in their study.

  11. does it work if you have 7+ billion people? by mschaffer · · Score: 1

    Ok. So you can uniquely identify one out of fifty. Let's see how that works with over 7 billion people.
    Also, would they be able to pull the 50 people out of a crowd of others of unknown scans?

    1. Re:does it work if you have 7+ billion people? by Actually,+I+do+RTFA · · Score: 1

      Let's see how that works with over 7 billion people. Also, would they be able to pull the 50 people out of a crowd of others of unknown scans?

      Doesn't matter. If your brainscan matches criminal Y or terrorist Z, you must also be a criminal/terrorist. Time to get shipped to a hole. Welcome to the future.

      Note, access to money may require a brainscan as well, but also other verification. After all, there can be no chances with money on the line.

      --
      Your ad here. Ask me how!
  12. My response to Pizza will vary by Anonymous Coward · · Score: 0

    a lot depending on how hungry I am and when I last stepped on the scale.

  13. The signature will likely change over time by Anonymous Coward · · Score: 1

    I'm guessing that these signature series they are developing to uniquely identify people will slowly diverge from what the person's actual brain pattern is on observing the images over a period of time.

  14. no need to scan my brain: pineapple pizza is gross by Pseudonymous+Powers · · Score: 1

    Researchers... recorded the brain activity of 50 people wearing an electroencephalogram (EEG) headset while they looked at a series of 500 images designed specifically to elicit unique responses from person to person -- e.g., a slice of pizza...

    How long before the local pizzeria makes you sign a Terms of Service agreement that says they're allowed to scan your brainwaves while you're looking at a slice of pizza, and then sell that data to the highest bidder?

    On a more serious note, using biometrics of any kind to secure systems is kind of dumb, because they can't be changed, even when they get compromised.

  15. I can think of one application for this tech. by Anonymous Coward · · Score: 0

    It could be used to lock people out of their communication devices while they're drunk or high. Too many people send texts and emails they shouldn't while they're intoxicated.

  16. Names by bugs2squash · · Score: 1

    Can it tell what (or whom) I am looking at ? That would be great, it could remind me of people's names when I meet them.

    --
    Nullius in verba
  17. hybrid metrology by Anonymous Coward · · Score: 0

    With face plus fingerprint plus password, social engineering will still keep your computer unsafe. Fallible humans.

  18. Uniqueness by Anonymous Coward · · Score: 0

    Beyond false positives and false negatives, is the signal actually unique to an individual? Can they reasonably guarantee that these measured parameters will be unique to any individual in a sample of arbitrarily large size?
    If the answer is "no" then this merely becomes another biometric option for multifactor authentication. This may also be an interesting anthropometric data for human engineering.

  19. Stress & Biometric Issues by cyriustek · · Score: 4, Interesting

    Some rightly noted that it may be possible for brain waves to change over time. However, I wonder if stress can significantly change the identification? For example, merely looking at images may provide a different brain wave result if the person being examined has a gun being held to their head whilst looking at the images. In kind, what if the person just learned his/her significant other is cheating on them. (By a mattress with an app, surely)

    A common biometric issue is that if the information that represents who you are is stolen (a fingerprint, iris pattern, etc...), you cannot easily change it. However, I wonder if appropriately controlled stress or mind exercises can change one's brain pattern?

    1. Re:Stress & Biometric Issues by Quantus347 · · Score: 1

      I expect that I'd respond much differently to a picture of a slice of pizza (to use their example) from one day to the next, or even before vs after lunch time. Hell, if Im craving greasy food vs feeling ill/hungover that day, my responses could be all over the place. Having played with the emotiv EEG headsets before, I know how hard if can be to get a repeatable trigger state without significant sysem training.

      Though it would be interesting to discover if a properly motivated infiltrator could actually train themselves to mimic another person's neural response profile, given enough time.

      --
      Common Sense isn't as Common as people think...
    2. Re:Stress & Biometric Issues by Anonymous Coward · · Score: 0

      Interesting. A spy mimics the brain pattern of a patriot in order to infiltrate HQ for nefarious purposes, only to become that patriot! I smell a Hollywood script in the making,

  20. 500 unique signatures, that is all. by 140Mandak262Jamuna · · Score: 1

    All they did was to show 500 images to 50 people. The EEG had 50 unique signatures.Unless they repeat the experiment many times, and make sure the same person will make the same signature looking at the same 500 pictures, it is not "identifying" anyone.

    --
    sed -e 's/Chuck Norris/Rajnikant/g' joke > fact
  21. How the hell can this identify women? by Anonymous Coward · · Score: 0

    Women don't think or feel the same way twice about something. How the hell is this system supposedly going to identify women with 100% accuracy?

  22. Measure my erect willie by Anonymous Coward · · Score: 0

    and get the same 100% accuracy.

  23. How do biometrics work? by mark_reh · · Score: 1

    How is it determined that every person's fingerprints are unique, that their irises are unique, that blood vessels in the retina are unique, that brain waves are unique?

    With things that can change over time, how reliable are the biometrics? Fingers can be injured, retinas can change with macular degeneration and other problems, irises can change when the eye is injured, brain waves???

    1. Re:How do biometrics work? by suutar · · Score: 1

      As far as I'm aware, the assertion that all of those are unique are based entirely on a lack of contradictory evidence. How much effort has been expended to try to find contradictory evidence I don't know, though I'd expect that someone would have run a "check for apparent dupes" process on existing fingerprint databases by now.

    2. Re:How do biometrics work? by Zeroko · · Score: 1

      I would think it should be easy to estimate by finding the distribution of features, then calculating the effective size of the entire feature space (may not be the full size if some combinations are more common than others), then taking the square root (for the birthday paradox) to figure out how unique the measure is at any given time. Accounting for how variation over time affects the uniqueness is left as an exercise for the reader.

    3. Re:How do biometrics work? by iggymanz · · Score: 1

      fingerprinting and forensically supplied prints, supposedly absolutely identifying a suspect for much of the time since 1911, now looking less and less reliable as time goes on:

      http://www.forensicmag.com/new...

    4. Re:How do biometrics work? by Anonymous Coward · · Score: 0

      Perhaps being absolutely unique is not required just rare. For example if you have the same password as someone else does it really matter as long as it is rare enough probably not.

      Same with finger prints to some extent, what if 3 people on the planet had the same finger prints. Still rare enough to be robust for password/access I would think. Better than a 4 digit pin number or maybe even better than 5 digits.

  24. What if I have a hangover ... by Alain+Williams · · Score: 1

    from the night before, or have drugs (legal or otherwise) in my system ? How does it perform ? It probably does not matter in the instance of allowing people into a sensitive area - might even be a benefit: do you want someone with a sore head near the big red buttons of a nuclear missile ?

    1. Re:What if I have a hangover ... by Anonymous Coward · · Score: 0

      compare:
      "Dude, i have a drug test in a few days, i need to get all this THC out of my system!"

      with
      "Dude, the cops want to give me a brain scan, i need to get some THC into my system!"

  25. Mmmmm... pizza..... by kimgkimg · · Score: 1

    I guess they'll need to whittle down the picture content to make it suitable for quickly screening people. Must take a while to get through 500 images.

  26. Pizza hut by nikkipolya · · Score: 1

    I used to like Pizza until I tasted one at Pizza Hut recently. Now I almost puke at the sight of a Pizza.

  27. Time is not your friend by freak0fnature · · Score: 1

    Unfortunately, this study does not prove it's intended use case, which is to identify someone at some point in the future. They recorded a single event and used it to detect the same event in a pile of 500. Any decent programmer can do that. There's no evidence this will be accurate when taking a snapshot a year from when the baseline was taken.

  28. CAPTCHA 2019 by seven+of+five · · Score: 1

    Please view the following 500 images...

  29. Disorders or stress by phorm · · Score: 1

    Things like PTSD, forms of dementia, or personality disorders come to mind. How do these affect brainwaves in regards to the test?

    While I'm not sure about the latter two, I recently listened to a radio-documentary about PTSD and how one company was combining monitoring of brainwaves with various forms of therapy in order to find the most effective treatment, so it stands to reason that heavy stress and particularly PTSD may change things.

  30. So by Anonymous Coward · · Score: 0

    ... participants' brains reacted differently to each image ...

    So instant mind-reading, even by machine, is impossible.

  31. Consistent over time? by Anonymous Coward · · Score: 0

    My question: how consistent is the response rate over time? I.e. What might cause my response to a picture of a ball today to be different a year from now?

  32. What Futurama says about this by Anonymous Coward · · Score: 0

    In Futurama, Philip J Fry tries to access his bank account that he opened over 1000 years earlier. After checking, the bank teller says “Hmm. We don't seem to have your retina scan, your fingerprint or your colonic map on file.”

  33. Not likely by Anonymous Coward · · Score: 0

    Unless you are a complete and utter sheep. The depths that 'science' has sunk to, treating all of existence as binary, would make revolutionary scietists of the past weep.

  34. I would be willing to wager by Anonymous Coward · · Score: 0

    That all of the participants were younger people that hadn't yet had the opportunity to eveolve in their lives, and by extension, their thinking. Total BS, no one alive is that one dimensional for eternity. Boo!

    1. Re:I would be willing to wager by Keybounce · · Score: 1

      Maybe not for eternity, but many people are unchanging for dozens of years, and I can guarantee you that there are plenty of people that are effectively unchanged from their late teens until death.

      The sad truth is that a very large number of people can be characterized as, such and such behavior has gotten me this far in life, and is therefore good enough for me to continue doing. Change in behavior only occurs when people recognize that their old behavior is not good enough; merely being not good enough is not sufficient to cause change.

  35. It only works on gradual students. by tlambert · · Score: 1

    It only works on gradual students.

    You have to be educated to a certain level, and then you have to be so poor that you volunteer for this type of crap. And then it works, 100% of the time.

  36. Wonderful news for by Anonymous Coward · · Score: 0

    Forensic Medicine :P
    I can imagine a fantastic CSI episode already

  37. Yeah, sure by Anonymous Coward · · Score: 0

    First they would need to to know how my brain waves look like! Oh, wait...

  38. What about Sarah Palin? by Anonymous Coward · · Score: 0

    Can they tell her from a piece of rock, assuming the rock has no lichen and she has no head lice?

  39. How long does it take? by fgouget · · Score: 1

    They said the participants "looked at a series of 500 images". If they have to look at the whole set for the identification to be accurate that's a lot.
    At 10 seconds per picture that would be over one hour and a half. Even at 1 second per picture, and I'd be surprised it could go any faster, this would be over 8 minutes. Even in situations "like ensuring the person going into the Pentagon or the nuclear launch bay is the right person", waiting at the door for over 8 minutes watching the same stupid pictures every day probably gets old quick.

  40. Use case by codeButcher · · Score: 1

    Wants to look up time on phone.

    Drags out EEG headset....

    --
    Free, as in your money being freed from the confines of your account.
  41. Too plastic by Anonymous Coward · · Score: 0

    What happens if over the weekend I eat too much pizza and get sick? Would I be unable to authenticate on Monday because my brain's new association?