Together with the dummy - there's for around 30 Euro at Amazon - affects this sticker pretty believable, and the deterrent effect is even stronger.
At the label:
- Good quality, thick film,
- Is attached at lightning speed,
- The Aufklaber is designed so that it can be fitted both on the outside (for example, on the door), or from the inside (for example, from the inside to the window).
And last: What else can for as little money deter burglars? I can recommend the sticker around.