While testing iOS 11.3 beta, 9to5Mac found that while the first Ask to Buy request still required a password, the system then asked if the user would like to enable Face ID for future Family Sharing approvals. Clicking "Enable" then sets that up and a password is no longer required.

Other features coming with iOS 11.3 include a battery health monitor, the ability to disable slowdowns, improvements to ARKit and Health Records.