What is SATSCARD?

It's an OPENDIME in an NFC card form factor with 10 times the reuse capacity.

Gift and trade #Bitcoin physically; maximize in person trade while minimizing trust between parties.

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What is TAPSIGNER?

It's a Bitcoin private key on a card! You can sign mobile wallet transaction by tapping the phone. Your mobile wallet provides most of the wallet logic and TAPSIGNER holds the secrets. It's essentially a HW you can slip inside your regular physical wallet.

Learn more here