On the cheap, looks like you forked out a bit on paints Doobie.....most people in the Dam just paint their bikes with normal paint, lol. But then this generally applies to most bikes when left locked in the City Centre...I did laugh at the Dutch humour.
The notice announces that: Within a short period your bike will be stolen
If you lived in Amsterdam Doobs you would have the choice to either limit your scooter to 25km / hour (which would enable you to ride without a helmet and also ride in the bike paths (although the cyclist would think you were a cunt for doing it )- I generally don't like scooter riders on bike lanes as they are obnoxious and ride around with their fingers on the horns constantly. Or you could leave it and ride with a helmet on the roads at normal pace. Or like 98% of the (broomers, bromfiesten,) you would get the scooter chipped. Now these guys really annoy me. Basically it's a big thing for the police setting up Scooter road blocks to test them (a lot don't have licenses, are stolen, etc). But they also check out their speed on machines at the check points. This is to see if you are riding a bike that goes faster than 25km on a bike lane without a helmet. The chips people have mean they have a fob key that triggers the chip that allows the bike to go over 25km. When they stop the ignition you need to trigger the chip to allow it to go above the 25km again, i.e when they get stopped, they switch of engine and hide the fob key, hoping the police don't find the chip on the bike. Ultimately, scooters are one of the top causes of death on the roads in Holland.
This post is for information only and in now way is an indictment on scooters riders across the world.