zhenech on Nostr: npub1rea6q…lfduv which other 2FA app allows exporting keys as strings or QR codes?npub1rea6qv6u02m3xa494y3uztacvtn7er99zqzarverpfhrfuv37acqjlfduv (npub1rea…fduv) which other 2FA app allows exporting keys as strings or QR codes?