☕ *Morning Coffee Link* --
Using ASP .NET Core Passkeys for Second Factor Authentication -
https://blog.maartenballiauw.be/posts/2026-10-01-using-aspnet-core-passkeys-for-second-factor-authentication/
(Morning Coffee Link is a single link every weekday about coding that either sparks debate, provokes a thought process of some kind, or introduces a technique for developers).
See the entire list at https://www.danylkoweb.com/MorningCoffeeLink
blog.maartenballiauw.beUsing ASP.NET Core Passkeys for Second Factor Authentication | Maarten Balliauw {blog}You can use passkeys as a second factor after password login in ASP.NET Core Identity on .NET 10. Register a two-factor token provider for users who have a passkey, then add two endpoints: one creates passkey request options for the user who passed the password check, and the other verifies the passkey before completing sign-in. Store the user id from the password step in a short-lived cookie, and