Daniel Amitay has been able to collect a sample of over 200,000 passcodes used to lock an iPhone. The most common ones were:
- 1234
- 0000
- 2580 (a vertical row)
- 1111
- 5555
- 5683 (spells LOVE)
- 0852 (a vertical row)
- 2222
- 1212
- 1998
This list represents 15% of all PINS (that’s too high). Years starting with 199 were also found to be common. And PINS starting with 1 are also very common.
The information here is relevant to other devices as well, basically anything that uses a 4 digit PIN typed into a keypad.
If you use any of these codes to lock something you consider important you should change it now.