STAND LOCK / bicycle locks

People using bycicles buy lock device to prevent robbery.
But lock devices contain inconvinencies of carrying it with them all the time, and using process also has lots of uncomfortable steps.
Usually people tie it on the saddle and untie when they need to use it. This process has multiple inconveniency and people feel uncomfortable.
In order to take away these inconvinced, we have applied the lock system in the standing bar back of the bicycle.