BitLock allows eliminating physical keys, while also enabling multiple authorized users to share a bicycle. The lock senses the proximity of a user within 3 feet as long as the BitLock app is running in the background of the user's mobile device. Once automatically detected, the user simply presses a button on BitLock to unlock. The enabling signal is sent through Bluetooth 4 or Bluetooth Low Energy, a technology supported across many iOS and Android mobile devices. BitLock can optionally be unlocked/locked through a 16-digit binary code that users can keep in a piece of paper in their wallets as backup in case a mobile device runs out of battery. BitLock's maker claims a battery life of 5-years, banking-grade encryption, and resistance and waterproofing against inclement weather. Also, its design and material selection were chosen to deter bike thieves. Bitlock was launched in 2013 by Mesh Motion Inc, with first units shipped to customers on February 2015.
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