Hey.
I bought a garmin gps off goodwill.
It’s locked with 4 digit pin that seems pretty impossible to backdoor with resets. It requires literally sending it to the factory—they can’t do it over the phone or computer.
I found this:
http://www.datagenetics.com/blog/september32012/index.html
Have you ever seen a list like that that is the complete list? He only shows the top and bottom 20, plus a few more.
The graph is encouraging. It says you can brute force the top 426 and get a 50% chance of success.
I’ve already tried 0000-0027, the top 20, the bottom 20, all four-digits the same (0000-9999), 1960-2020, x000.
Interestingly, I tried 1234 first, because I must have seen this article. The article says it works 11% of the time.
The top-20 is quite good, and I’ve extended that some, but I’m hoping someone has an actual list.
I’m trying to think of numbers in pop culture, but I can only think of geekie ones:
0300, 3141, 3142, 1492, 2600
A bunch of people seem to have built CNC devices to do this:
https://www.youtube.com/watch?v=sHp4px45uQY
I’ve got to think this is bad design. It’s secure, but people give away the unit to Goodwill rather than trying to crack it. Theft prevention, maybe, but annoying to actual owners.
It will unlock if you take it to a location that you set up initially.
Matthew
