This pin might make you an easy target. Many people have difficulty selecting and remembering a passcode, especially when it involves four-digit pins. But if you plan to default to something as easy ...

The safest 4-digit PIN is '8068' — or at least it was, until researchers at Data Genetics told everyone this week. The researchers there went through a set of 3.4 million four-digit personal ...

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 ...

As surely as 2+2=4, it also equals a beginning step on students’ mathematics journey. Single-digit addition facts like these are so heavily used in mathematics that it’s critical that students ...