A 4-digit iPhone passcode is about as insecure as it gets, and this black box can figure yours out in just a few days. So it's time to consider better security.

First, a reminder: If you don't have any security on your iPhone, you can enable the 4-digit passcode lock by going to Settings, tapping General, and enabling the Passcode Lock control.

While a six-digit passcode is always more secure compared to a four-digit passcode, it's also more frustrating to remember and enter whenever prompted. Thankfully, there's a way to revert to using ...

An iPhone user has found a trivial way to bypass the four-digit passcode lock on fully patched iPhone (iOS 4.1) devices.

Think again. Technology available to law enforcement officials by Swedish firm Micro Systemation can be used by to hack into the handset and bypass the four-digit passcode in less than two minutes.

Find a balance that works for you and set the Require Passcode timeframe. • Simple Passcode. As noted above, the iPhone 4 relies on a simple four-digit numeric passcode by default.

You probably know that your iPhone features a simple passcode functionality that secures the device by requiring, by default, a 4-digit PIN to unlock your phone. But as you also probably know, a 4 ...

Want a little stronger security lock-down for your iPhone than what the 4-digit PIN offers? Weblog 9 to 5 Mac details how to enable a more secure alpha-numeric passcode on your device with a few ...

Apple puts two factors front and center to secure accounts in iOS and OS X, while suggesting a longer passcode in iOS 9.

Unlike the iPhone or iPad, you only have options for a numeric passcode on Apple Watch, since watchOS has no native keyboard support. However, you do have options for a 4 or up to 10 digit ...