Recently, the number of users sharing smartphone passcodes has increased.

Comprehensive and Detailed Explanation From Exact Extract:

Facial recognition is a biometric authentication method that ties access to a unique physical feature of the user. Unlike passcodes or pattern locks—which can be easily shared—facial recognition provides a more secure and non-transferable form of access. It also enhances user convenience and is widely supported by modern smartphones.

A. Pattern locks can still be shared and are less secure.

C. Device encryption protects data but does not prevent screen access if a passcode is shared.

D. Multifactor authentication typically applies to app or account access, not basic phone unlocking.