I wish I had this around when my bike was stolen! As soon as someone tampers with your bike, this nifty gadget will send an alert to your phone. Further, BikeSpike is a beacon that uses GPS and cellular technology to broadcast its position Simply affix the BikeSpike to your frame and locate its position on a map by logging on through their web portal or mobile app. Did I mention it’ll also automatically notify friends if you’re in a crash and can even be used to track your times in races. $150
