Apple today seeded the release candidate versions of upcoming iOS 16.3 and iPadOS 16.3 updates to developers for testing purposes, with the new software coming a week after the second betas.
Registered developers can download the iOS 16.3 and iPadOS 16.3 profiles from the Apple Developer Center, and once installed, the betas will be available over the air.
iOS 16.3 and iPadOS 16.3 add support for physical Security Keys that can be used as added protection for an Apple ID. Any FIDO Certified physical security key can be linked to an Apple ID to be used for authentication when logging into a new device or otherwise accessing an Apple ID.
Security Keys replace the digital verification codes sent to an Apple device when using an Apple ID, and Apple says that the physical key provides strong protection against phishing and unauthorized account access. Note that two physical security keys are required when using this feature as there needs to be a backup in case