The initial motivation to buy a Keycard (Smartcard) is to secure Crypto close to the pricetag of getting a new creditcard.
On the long run, it could be used to secure ones digital life: devices, keyfiles, passphrases (if still needed), conversations, files etc.
As soon as enough have a reason to adapt a keycard, one can backup by shamir secret sharing with friends.
This seems the key problem to solve to free data from big provides, with nowadays provide gratis, more or less secure storage of our data.
This would allow technical users with NFC Hardware to:
Example: https://github.com/hoytech/defido2 (command-line contract-based ethereum wallet based on FIDO2)
The initial motivation to buy a Keycard (Smartcard) is to secure Crypto close to the pricetag of getting a new creditcard. On the long run, it could be used to secure ones digital life: devices, keyfiles, passphrases (if still needed), conversations, files etc.
As soon as enough have a reason to adapt a keycard, one can backup by shamir secret sharing with friends.
This seems the key problem to solve to free data from big provides, with nowadays provide gratis, more or less secure storage of our data.