The code 0000, according to the data, took the 2 percent of the pie. “It’s amazing how predictable people are. We don’t like hard-to-remember numbers and no one thinks their wallet will get stolen,” Berry says. Additionally, the data shows that many of the passwords are mostly dates, particularly birthdays, anniversaries, and year of birth. “People use years, date of birth – it’s a monumentally stupid thing to do because, if you lose your wallet, your driver’s license is in there. If someone finds it, they’ve got the date of birth on there,” he adds. Berry also found out that the PIN number 8068 is the least used with just 25 occurrences. The lesson here? Use a better PIN code. And don’t bother using 8068. The hackers already know it.