Tempo supports P256/WebAuthn signatures natively (tx type 0x76, key_type 2). Your passkey's P256 public key IS your Tempo account — no seed phrases, no browser extensions. The address is derived from your credential's public key coordinates.
📖 Tempo Passkey Docs →This P256 public key is your Tempo account. It can sign TempoTransactions (type 0x76) using WebAuthn key_type 2.