Passkeys. That’s what Google (and others) are calling the replacement of passwords. But how do they work? What does a user and a developer need to do to make them work? Follow me on a journey on answering those questions, sprinkling Kotlin code examples, an overview of specifications (FIDO/ WebAuthn), some words towards algorithms (elliptical curves what?), and some use cases in the discussion of Passkeys, public key encryption. At the end of this talk, you’ll have seen code on how to create and assert credentials, and learned key vocabulary to deepen your understanding of passkeys from the mouth of the company creating security keys using passkeys.