Import TOTP credentials from the export spreadsheet into a VivoKey Apex
OTP (ykneo-oath) applet over PC/SC. Includes the OATH protocol layer
(SELECT/VALIDATE/LIST/PUT with 61xx reassembly), PBKDF2 password
authentication, pre-flight input validation, ask-per-conflict handling,
optional javacard-memory profiling, and hardware-free unit tests.
