Last month, it was reported that iPhone X owners are unable to use Face ID as an authentication method for the “Ask to Buy” feature, which allows parents to approve their kids’ iOS purchases and downloads, despite the fact that the functionality is available on Touch ID devices.
“It looks like this is going to change soon, according to our testing of the first iOS 11.3 beta. With this beta, we have been able to approve a purchase on a parent’s device using Face ID. The first time a purchase approval request is received, the parent must enter their password. After entering the password for the first time, iOS asks if the parent would like to enable Face ID for future approvals.”
iOS 11.3 beta testers are reporting that once you have enabled Face ID for iTunes family purchases, whenever a new approval request is received, tapping the “Buy” button launches Face ID authentication instead of the standard password prompt.
Check out the beta feature in action in the following video: