Want to read Slashdot from your mobile device? Point it at m.slashdot.org and keep reading!


Forgot your password?

Comment Why restrict this to the blind? (Score 1, Insightful) 131

This is the most promising bit of cybernetics news I have seen in quite a while. I've been hoping that some day within my lifespan artificial senses could be used. Well, now it looks like they can. Maybe they make for low-resolution video, maybe they can be used for information readout. Yeah, it would look weird, but this can give you (for example) a read heads-up display that doesn't interfere with your vision. Or an interface for processing senses from remotely controlled robots. Imagine the fun business users would have being able to "read" their email while driving. The possibilities are endless.

Comment Re:Excuse me, but... (Score 1) 51

But say you have two black boxes. The first uses Diffie-Hellman to exchange a key for subsequent AES encryption; the second exchanges a one time pad using quantum cryptography. What's the advantage of the second? In a passive attack (snooping alone), the snooper can't break Diffie-Hellman. In an active attack (man-in-the-middle), quantum crypto fails as well: I just put a machine in the middle that acts as A to B and B to A, receive one pad from A and send a completely different one to B, and go on my merry way, transparently reencrypting anything passing through.

You can't perform a man-in-the-middle attack with quantum crypto because the one-time-pads are exchanged in advance. You can't send an OTP with the message, you have to share it in a secure manner at some previous time. In the quantum crypto case, you would create and distribute the entangled particles ahead of time, then use the OTP to send a strong symmetric crypto key and encrypt your normal communication with that.

You can't intercept that one-time-pad key transmission because, if you did, you wouldn't be able to reproduce the OTP to re-encrypt your man-in-the-middle key to be sent to the other party. While quantum crypto doesn't prevent interference, it makes it impossible for the interference to not be noticed. That is its advantage.


DIY Google Street View Project? 106

Ismenio writes "Does anyone have any ideas for a do-it-yourself Google-Street-View-like project on the cheap? I am planning to visit a few places outside the US that are important to me, and would like to be able to set up a site for friends and family to visit and give them the Street View-like experience so that they could navigate, pan and zoom in the areas I have. Though being able to use GPS coordinates would be great, that's certainly something I can do without. I know I can take pictures and stitch them together to create panoramic views, but I would like to be able to also navigate though some streets. Would it make sense to record it with an HD camera, then batch export frames as pictures? Is there any software in the open source community that I can use?" Ismenio includes links to some related pages: Popular Mechanics' look at the camera tech used for Street View, and a company that claims better panoramic image technology than Google's.

Slashdot Top Deals

After an instrument has been assembled, extra components will be found on the bench.