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Sonar Software Detects Laptop User Presence
Steve Tarzia writes "A research group at Northwestern University and University of Michigan has released open-source display power-management software that uses a new user presence detection technique. The goal is to shut off the display immediately when the user leaves the computer rather than using slow and error-prone mouse/keyboard activity timeouts. Surprisingly, the mic and speakers of many laptop computers are sensitive to ultrasonic frequencies. Those frequencies can be used to silently probe the laptop's physical environment. This software is based on research published at the UbiComp2009 conference. A Windows binary and source code for Windows and Linux are available for download."
Don't know if I type slow, think slow, or both, but one of my pet annoyances is when the screen saver kicks-in as I'm staring at the screen in thought (sure I know how to set it, but I am not always in front of my own PC, and oft away and then back a lot through the day).
If this will simply tell the OS, hold on, he's sitting there doing something, I'd find it a pretty neat idea.
Greg
"We can't use that laptop here, this is bat country!"
In the land of the blind, the one-eyed man is usually crucified.
I'm just asleep, you insensitive clod! (or does it detect snoring?)
Warning: this article may contain humor, sarcasm, parody, and perhaps even irony. Read at your own risk.
I wonder how fine of a resolution is possible with a setup like this with generic microphones and speakers. Maybe it would be possible to use this as a biometric lock on a computer system. It could function as a facial recognition check using the ultrasound picture or series of pictures of your face. Lighting wouldn't affect it and someone couldn't simply use a picture of you to try and fool the camera. Even a bust of your face wouldn't work the same unless it accurately simulated your bone structure and flesh.
I find it doesn't. My PC at work has to be configured to require a password be entered on exiting the screensaver, and my password has to be quite complex. If I'm working on something that's not the PC (yeah, we still use paper for things) for longer than the minute, I've got to enter my password to carry on, which is irritating.
It's less irritating when it kicks in when I'm reading or watching a video or something, but I'd still prefer it not to, and I really don't see the privacy angle on this. It's no idea where I am, just that there's something in front of it.
But, generally, I don't have much of a problem with my computer knowing all sorts of stuff about me, it's what it tells to who that I concern myself with.
This wouldn't work with headphones plugged into the computer unless you can get the laptop's built in speakers working independantly (it can do it, old Ubuntu 7.10 had them on separate mixer controls on my laptop). But desktop users usually have their powered speakers off when using headphones.
Does anyone have an idea on how to solve that? You could put out ultrasonic sound through the headphones that get blocked when used, but it could damage your hearing depending on how loud it needs to be to get picked up by the microphone.
Unicode in Slashdot
And dimmer switches, cordless drill battery charges, and even a really annoying slice of whatever frequency god damn bats chatter at. In short, my super power is above average HF hearing. Hooray for me...
Now, I like this idea, it's neat, I just really hope it operates well over 18khz so my head does not explode all Scanners style when I walk into a room full of laptops.
/+5 Hat of Greed equipped.
Oooh, I'm drooling! Let's see:
$APP detects two people within viewing distance of your monitor. [click here] to upgrade to the appropriate license.
/+5 Hat of Greed unequipped.
/+5 Hat of Stealth equipped.
Oooh, I'm drooling for different reasons. Let's see:
$APP detects additional person approaching monitor. Autominimize firefox://ridiculous.pornsite.com; automaximize firefox://romanticweekendgetawayswiththewife.toshowherhowmuchyouloveher.com.
Whew, that was a close one.
"Trolls they were, but filled with the evil will of their master: a fell race..." -- J.R.R. Tolkien on Olog-hai
It would be nice if they would make the software license clear. Even if just to say that "this is government sponsored and so available for copying with no restrictions". Also at the bottom of the page they say '"Windows" is a registered trademark of the Microsoft Corporation.' but forget to mention that Linux is a registered trademark of Linus Torvalds.
=~ s,(.*),<sarcasm>$1</sarcasm>,g if any_point_you_wish();
IM status can be set manually so if you are concerned about privacy... set it manually. Not to mention just because your SYSTEM knows things about you doesn't mean you must pass it on to any app, especially networked ones. Your system knows all sorts of things that it doesn't readily share.
Believe it or not people can determine all sorts of things about you IRL just by watching too. In fact, IRL, you are way more prone to being tracked and monitored than online. Imagine, someone can see you leave your house, go in, steal shit, and leave all by watching you. We need to fix that bug IRL asap.
I can't believe the level of unjust paranoia you are experiencing. The fact is if people care enough to track you, they will be able to. It doesn't matter if you have a laptop that turns off when you leave it or not. Also, how does a 5 minute delay from a regular inactivity time out differ from this so much that this tech is all of the sudden dangerous. It seems to me like people can be monitored via IM just as easy right now as if this was being widely used, just with a tad bit more 'false present' status existing.
You got that backwards. What they should do is deleting the remark about Windows. Anyone succumbing to the (tm) crap should have their head examined. Every time somebody writes "registered trademark", god kills a kitten. It's true. Between us, we just killed two. No, I'm not going to write it again.
Now someone is going to say legal blahblah necessary blahblah. But there is something wrong if fear of a big corporation is making you write that kind of kitten-lethal nonsense every time you mention a product made by that corporation.
I use an HP Pavillion dv6, but I'd prefer something with a touchscreen.
Thanks for asking!
The land shall stone them with the bread of his son.
Also, how does a 5 minute delay from a regular inactivity time out differ from this so much that this tech is all of the sudden dangerous. It seems to me like people can be monitored via IM just as easy right now as if this was being widely used, just with a tad bit more 'false present' status existing.
Because 5 minutes is the maximum amount of time I can be outside before I get scared of the big ball of fire in the sky and have to run back in. If the crooks think I'm home that whole time, I'll always be safe.
The enemies of Democracy are
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