Note that tpm2-totp is specifically meant to authenticate your laptop's state (TPM PCR values) to you, not you to some third system. But you could adapt tpm2-t

Note that tpm2-totp is specifically meant to authenticate your laptop's state (TPM PCR values) to you, not you to some third system. But you could adapt tpm2-totp for the purpose of authenticating you to other systems.