Most people use predictable PINs that thieves try first. Find out which codes to avoid and what you should use to better protect your phone.

Some custom ROMs let you erase the entire phone by typing a special PIN. That's too drastic. A decoy setup would benefit more ...

Tired of unlocking your Android phone the normal, boring way? There's an easy way to gain access without entering a PIN by using Smart Lock. Here's how.

If you have an Apple or an Android phone—and you probably do—you have the option of locking your phone using a PIN code. With most of these phones, you can choose a four-digit PIN or a six ...

A duress PIN is a secondary PIN that triggers a complete and irreversible wipe of your device, making it useless to any attacker.

Video There's nothing particularly difficult about cracking a smartphone's four-digit PIN code. All it takes is a pair of thumbs and enough persistence to try all 10,000 combinations. But hackers ...