Post
Topic
Board Development & Technical Discussion
Bitcoin debit card on PIC
by
bitcoinex
on 18/03/2011, 10:28:32 UTC
BUMP!

2. device-to-device transactions over bluetooth
Doing off-line  BC transaction over bluetooth  devices during the
day   and  sync  the   transactions  to   the  BC   network  with
internet-connected computer later.

What do you think folks?

--
eko

So, decided to replace Bluetooth to screen barcodes? Sad

Suggestion (from this topic):

"Bitcoin debit card"

Bluetooth wireless 'smartcard' device which can ECDSA cryptography. On PIC controller with LCD screen and 2 buttons.
It can receive request (bills) for payents by bluetooth, display payie selfname and "To: payee address", amount and wait for pushing 'Pay' or 'Cancel'.
Bluetooth connection are encrypted by assymmetric encryption without certificate (it is not needed because device have a display with buttions).

I dreamed a such device today. It is been cool green PCB in the glass box. Unfortunately, firmware and source code not copied from dream Smiley

If it is interesting can discuss the details. For example, which opensource protocol implementation can be used for communication via bluetooth?