We’ve all been using a passcode to secure our iPhones and iPads since forever, right? You’ve had the option to use an alphanumeric passcode since iOS 7, but if you chose to use a simple numeric code, ...

What's a verification code, and why are they so important? Six-digit verification codes are a form of two-factor authentication, a process that helps keep your important online accounts secure. For ...

New estimates from a security researcher suggest GrayKey, a digital forensics tool in active use by U.S. law enforcement agencies, is capable of cracking Apple's standard six-digit iPhone passcode in ...

When I updated iOS on my iPhone, I was forced to choose a six-digit passcode instead of a four-digit one. Is there any way to go back? As part of its drive to increase security on Apple devices, the ...

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A German-American team of IT security researchers has investigated how users choose the PIN for their mobile phones and how they can be convinced to use a more secure number combination. They found ...

John is a writer at Pocket-lint. He is passionate about all things technology, and is always keeping up with the latest smartphone and PC releases. John has previously written at MobileSyrup. When ...

There's no reason to believe a six-digit PIN is substantially more secure than a four-digit PIN, according to a research paper on mobile phone passcodes. The reason? When asked to choose longer PINs, ...