3 ms·
The transmitter and the receiver are in close proximity. Whatever transmitted, the eavesdropper can observe nearby anyway.
by ww520 9y ago
The transmitter and the receiver are in close proximity. Whatever transmitted, the eavesdropper can observe nearby anyway.
- justwalt 9y agoHow about through a wall? That would make security applications in an apartment a bit less attractive, and I’m sure there are others. I wonder if encryption would be possible without much extra power overhead.
- ww520 9y agoSome sort of directional shielding? Isn't backscattering light directional? Someone knows more about backscattering can have a better answer.
- pishpash 9y agoAnalog encryption might be possible if the sender and receiver measure some common optical signal (assuming optically local security is what you're after).