Quote from: infofarmer on May 05, 2018, 08:25:56 AM

Quote from: TheQuin on May 05, 2018, 08:16:09 AM

Does that mean that the notes don't have the Bitcoin address printed on them? If not why was it done that way?

Anything printed is trivial to counterfeit. When you validate a Tangem Note over NFC, there's a cryptographic challengeresponse authentication which is impossible to fake. In a few milliseconds the app gets the public key and a proof that the private key is on the chip, as well as another digital signature that attests the manufacturing authenticity of the item.

Since we already rely on NFC and the secure chip to establish value and authenticity, adding too many physical cues could decrease overall security by making people rely on them in some situations.

If we apply Tangem technology to national cryptocurrencies, governments can limit redemption of the crypto banknotes they issue to accredited agents that guarantee physical destruction at redemption then people can rely on physical properties for those banknotes.

If it requires an NFC connection to chech the current balance, why the banknote is different from a mobile wallet? It's only that if you hand it over, it does not require a transaction to wait for? If the lightning network starts there will be no (or very short) time needed to the LN transactions to complete.
Maybe the only thing which is different is the anonymity if someone hands over the banknote and this has no track in any database...

You do a beta test with bitcoin and after you can start to work with national currencies?