Meet the Pingbell: a smart bike bell that pairs with your smartphone to help you ping your bike, find out where you have parked it, and figure out whether you are getting any closer to it. Pingbell features Bluetooth connectivity. When you park your bike, your bike’s location is recorded and displayed on a map when you need it.
Pingbell uses Bluetooth Smart to let you know whether you are getting closer. This bike bell is made of brass and loud enough to help you spot your bike faster. The product is expected to show up on crowdfunding sites in the near future.[Source]