The 9th Circuit Court of Appeals determined this week that police can physically force you to open your cell phone while handcuffed.

U.S. Customs and Border Protection have the authority to search your phone, but your password or Face ID can make a difference. Here's what to know.

It’s far quicker to unlock your phone with your face than to type out a passcode. The issues this practice raises—especially for groups more likely to interact with law enforcement—are enormous.