MasterLock wants to help users keep their possessions safe with a smart lock system that can be opened or closed by the user's smartphone. Bluetooth is the key to this smart lock, which opens when the phone owner comes within a certain distance. The lock can also be cracked manually, and users can give others access to the lock in case they are not available. MasterLock's product launched at CES is the MasterLock BLE Lock Box, which is portable and attaches to a wall mount so it can go anywhere in the home or office. This product will be available in the spring of 2017, according to the company.