Twelve explained decisions about passkey assurance, server pricing, provider evidence, fulfillment, and refunds. Choose one answer, inspect the explanation, and revisit the related trust boundary.
Related lessons
Passkey Registration Challenge and Credential Binding; Passkey Assertion, Origin, and Signature Verification; Passkey Conditional Sign-In and Fallback; Passkey Management, Recovery, and Step-Up; Server-Priced Order Snapshots and Money Units; Hosted Checkout Sessions and Browser Returns; Payment Webhook Reconciliation and Idempotent Fulfillment; Refunds, Reversals, and Payment Ledger State.