An iOS developer collected the four-digit passcodes used to lock his iPhone app and found that 14.4 percent of users were using one of the 10 common codes.

This Raspberry Pi-powered LEGO robot brute-force attacked an iPhone to find out what PIN codes are blacklisted iOS has a built-in blacklist of certain four-digit and six-digit PIN codes.

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.

There are ways the FBI can crack the iPhone PIN without Apple doing it for them Getting Apple to write new firmware is the easiest route—but probably not the only one.

People are really bad at creating pin codes, and a new study looks at how we could fix this problem.

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 ...

The alternatives are worse: A short PIN “lets you use your phone like a human,” Soghoian said, but can be guessed by a computer algorithm in certain cases.