This is an opinionated, “quick-start” guide to using passkeys as a web developer. It’s hopefully broadly applicable, but one size will never fit all authentication needs and this guide ignores everything that’s optional. So take it as a worked example, but not as gospel.
Based on industry standards for account authentication, passkeys are easier to use than passwords and far more secure. Adopt passkeys to give people a simple, secure way to sign in to your apps and websites across platforms — with no passwords required.
apple's developer docs