I just park my bike next to stuff thats worth stealing Theirs heaps of them Bike alarms with GPS tracking on em. EBAY is your friendLink: http://www.ebay.com/itm/Motorcycle-Motorbike-Security-Lock-Alarm-Alert-System-Theft-2-Way-SMS-GPS-New-/130661363429?pt=US_Tracking_Devices&hash=item1e6c062ee5