While I think we'd all agree that pattern unlock isn't the most desirable method for locking your phone down if you need the absolute highest degree of security, it appears that it has foiled someone. That someone happens to be the FBI. A pimp named Dante Dears was asked to turn in a cellphone that he once admitted never existed. The FBI, eager to find information that could help take him down, found that he'd locked his phone using pattern unlock, a method to unlock an Android phone using a pattern drawn on a 3×3 grid.
Android Phone, Android Pattern Lock Foils FBI's Attempt to Search Criminal's Phone
