My bad 🤣 calling it a sticker is a bit reductive. It takes time and effort to remove without damaging the bike, and it’s a sign for thieves that this bike is in a prevention database.

While the stickers are one option, you can also enter the bike’s serial, which is etched on at manufacture time. It’s a little less likely they’ll check, but good to have a record especially for anyone buying a bike used.