Daniel Amitay, the developer behind the 'Big Brother Camera Security' app, did some anonymous research on the app's users. Collecting the PINs of about 200,000 users, he found that a disproportionate number were using the same codes. In fact, 15% of users were utilizing one of only ten possible codes.
The top 10 most common codes were, in order, 1234, 0000, 2580, 1111, 5555, 5683, 0852, 2222, 1212, and 1998. In case you were wondering, the obvious outlier (5683) spells 'LOVE'.
And we think that the broader population would use these codes more than 15% of the time, as the users in the survey were all security-minded consumers.
source: Daniel Amitay via Lifehacker