[mrb]

It worse. It's not even a 4 digit PIN. It's the time in 24-hour format HHMM: https://news.ycombinator.com/item?id=15205579

You and your wife just did it 1 minute apart...

[qw]

I can't even imagine how something like that can be implemented. Even if you put the most junior developer on this, something so serious should have been reviewed by someone. At least do a quick search on stack overflow or something.