KADALOCK replaces your heavy duty lock to a light weight gadget, it is fits on your bike bottle cage, and connect your phone for security. Have peace of mind on your bike with KADALOCK, it connects your phone to watch your bike for you. KADALOCK is the bicycle bottle cage compatible Bluetooth cable lock, rider do not need to find a place to carry an additional lock on a backpack or external racks. KADALOCK is an innovative design that brings upon revolutionary changes in bicycle security. Unlike traditional heavy duty bicycle locks, KADALOCK is simply an attachment to the mounting holes of bottle cage, and it uses latest Bluetooth® Smart technology to connect to the user’s mobile phone. KADALOCK automatically activates when the user touches the body of the lock, otherwise remain in sleep mode to reduce energy consumption. Once awaken, KADALOCK will establish wireless transmission to the user’s smartphone, then request for digital code that authorizes the unlocking of KADALOCK.