Professionally fitted , Data-tag etches your lights and mirrors with a code and fits transponders, mine has 5, to the major parts of the bike. It was already done when I bought mine so I just had to register the change of owner. If you have stickers without the etching any thief knows you just have stickers. Not sure how efficient the Police are with the transponder readers but one wave of the reader over the bike will bring up a name and address. If that's not you then the explaining begins. This works even if the bike has been broken and sold for parts. A noisy alarm and a good chain and lock system is always a good idea.