How Easy Is It to Crack Your ATM Card PIN Code?

According to data scientist Nick Berry these are the most common pin codes. They should be avoided:

Berry also says, according to Yahoo, that it is not a good idea to use your birthday. His analysis shows that every single 19__ combination be found in the top 20% of the dataset.

"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. At least use a parent's date of birth [as a password]," says Berry.

Here are the least used pin codes:

Yahoo also lists  few other interesting tidbits from Berry:

-The most popular PIN code (1234) is used more than the lowest 4,200 codes combined.
- People have even less imagination in choosing five-digit passwords — 28% use 12345.
- The fourth most popular seven-digit password is 8675309, inspired by the Tommy Tutone song.
-People love using couplets for their PINs: 4545, 1313, etc. And for some reason, they don't like using pairs of numbers that have larger numerical gaps between them. Combinations like 45 and 67 occur much more frequently than 29 and 37.
- The 17th most common 10-digit password is 3141592654 (for those of you who are not math nerds, those are the first digits of Pi).

(ht Gary North)