Two‐factor authentication (2FA)?

Supported out of the box in ASP.NET Core Identity.

Options:

• SMS (via provider)
• Email
• Authenticator app (TOTP)

Enable via Identity configuration:

services.Configure<IdentityOptions>(options => {

options.SignIn.RequireConfirmedEmail = true;

});

Use SignInManager<T> to handle verification and token generation.

Filters & Middleware Overlaps