As tempting as it might be, avoid using 0000 as your four-digit PIN code. Same goes for 1010, 1111, 1122, and 1212, which comprises the top five worst PIN codes, according to a list compiled by ...

In fact, a 4-digit code only has 10,000 possible combinations. Even if you did try to use a more complicated one, you'd inevitably use the same one as someone out there — or multiple someones.

Many of us use the same 4-digit code for everything. Phones, credit cards, and even padlocks. A new report has shown that millions of people are using identical PIN codes, making phones and bank ...

Any airline passenger with the letters “SSSS” printed on their boarding pass has been selected by airport security for extra screening.

Unfortunately, she has also forgotten the four-digit code to her house. This shouldn’t be a problem, because she keeps a code clue in her wallet. It says: “Four times the car’s four-digit ...

Any airline passenger with the letters “SSSS” printed on their boarding pass has been selected by airport security for extra screening.