Ambient Backscatter - Wireless Bitcoin Transactions ?

[Kris]

Very cool project, no doubt it could be used for transferring bitcoin around, similar to bitcoincard.

The difference in communication compared to bitcoincard, would be that this project enables wireless communication by leveraging the radio frequencies signals already around us, instead of generating its own. And this without even using batteries since the signals carry energy.

http://www.youtube.com/watch?v=gX9cbxLSOkE

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[apetersson]

i doubt you can do ecdsa signing/verification with this low amount of power in a reasonable amount of time.

[Kris]

This would only be for sending the signal/broadcast transaction.