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The firefly certainly can transmit it has a display. I imagine an attacker could get the firefly to display enough information to extract the ether from the wal
by bognition 9y ago
The firefly certainly can transmit it has a display. I imagine an attacker could get the firefly to display enough information to extract the ether from the wallet.
- tracker1 9y agoIt's a proof of concept, and at least passively interesting. Of course, I didn't see a "decline" button, and without a power button it could be an issue.. btle could be sufficient with a screen sleep. Also no idea how to add currency to the wallet... that could be another issue.
- DiThi 9y ago> Also no idea how to add currency to the wallet... that could be another issue. Isn't that just sending coins to an address given as QR? In the demo it shows two kinds of QR: - Address (to deposit) - Signed transaction (to send) And the unsigned transaction is sent via BLE (I'm guessing only one way, so while not completely air gapped, it sounds fairly secure).
- yebyen 9y agoI saw another diagram of the device where it has two buttons -- one to accept (pay) and the other appears to be a power cutoff switch. I'm thinking that power cutoff will be the payment rejection button. > Also no idea how to add currency to the wallet If you get past the crowdfunding page, you are assigned a *.firefly.eth "ENS" name. This corresponds to a wallet address. So, the same way you add currency to any other wallet. (How does it know that it has an available balance, though...)