Question about Apple Magic Keyboard with Touch ID

Apple's "Magic Keyboard with Touch ID", identified by product code MK293SM/A, uses Touch ID technology for authentication, but this feature is primarily intended for Macs and not iPhones.

Touch ID on this keyboard works with compatible Macs, but it does not work directly with recent iPhones. iPhones use Face ID or Touch ID built into the device itself and are not compatible with Touch ID on the Apple Keyboard.