I can't help feeling this... In an adverse world software and electronic data is too ephemeral to entrust with authentication and authorization. What if we had something solid like a Yubikey, but:

- credit card sized

- completely airgapped

- standardized

- controlled by a non-profit association

- hard- and software open sourced

- built-in camera to scan data

- built-in display to show data

- configuration mode: scan human-readable configuration

- data is QR code or something like Base58 to copy by hand

- backup by supporting applications: scan and print out data

- browser integration by an extension using a webcam