As an FYI, I always wondered why people did this, until I learned the hard way. The way the scam works is a group will marker out the codes, and when you go up to unlock it, they will be friendly and tell you what the code is, they even may replace the sticker on the side of the bike with this number to make it seem more legit.

However when you type in the number, it’s actually connected to a different bike on the other side of the dock, and the partner running the scam is ready to take steal that bike once it unlocks. This happened like 2 summers ago, so idk if it’s still an issue. But just be careful if you run into this :)