We have seen plenty of cool bicycle locks in the past. Re-Lock is another smart lock that gives you keyless access. You can lock your bike with one hand and keep track of its status. As long as you have your e-key in your pocket, you will be able to communicate with your lock.
The lock and its key go to sleep after every action to save energy. The above video shows how Re-Lock works. More information is available on Indiegogo.