Your credit card number usually consists of 15 or 16 digits, depending on the issuer. Every number of your credit card account conveys information, such as the industry, routing information for the ...

There are many different types of numbers, some of which you may remember from school: natural, rational, irrational, imaginary, calculable and incalculable numbers. Today, however, we are going to ...

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 ...