Second factor & owner expectations

After a password, magic-link or one-time-code login you know the account. Ask for its passkey through Passkeys::for($user), which holds the result to that account (AuthenticationExpectation::owner($user)):

use RoundlyConsulting\Passkeys\DataTransferObjects\AuthenticationOptionsOverrides;
use RoundlyConsulting\Passkeys\Enums\UserVerification;
use RoundlyConsulting\Passkeys\Facades\Passkeys;

// 1. Options for the known account, demanding user verification for this step only.
$options = Passkeys::for($user)->authenticationOptions(new AuthenticationOptionsOverrides(
    userVerification: UserVerification::Required,
    timeoutMs: 30_000,
));

// 2. Verify, and refuse any credential that is not this exact account's.
$passkey = Passkeys::for($user)->authenticate($response);

AuthenticationOptionsOverrides sets userVerification and timeoutMs for one ceremony; null members fall back to config. The requirement is stored with the challenge, so the verifier enforces exactly what the options promised — a required step-up rejects a presence-only assertion even when the global default is preferred.

Multiple guards

With several guards whose models all own passkeys, restrict a usernameless login to one owner type:

use RoundlyConsulting\Passkeys\DataTransferObjects\AuthenticationExpectation;

$passkey = Passkeys::authenticate(
    $response,
    AuthenticationExpectation::ownerType((new Client)->getMorphClass()),
);

How expectations behave

• AuthenticationExpectation::owner($user) — what Passkeys::for($user)->authenticate() applies — checks the morph type and the key (int, numeric-string, UUID and ULID keys); ::ownerType($morphClass) checks the type only. Pass either to the flat Passkeys::authenticate($response, $expect).
• The check runs right after the credential is located — before the challenge is consumed and before its counter is touched — so a mismatch writes nothing and the right owner can still finish the same ceremony.
• A mismatch is the uniform CredentialNotFound, so it reveals nothing about other accounts.
• owner() refuses an unsaved model with InvalidExpectation instead of silently widening to every account of that type.

Use $user->hasPasskeys() to offer the passkey step only to accounts that have an active passkey and can actually complete it.