Lock for extremely frequent use Are there lock products out there specifically designed for easy handling when locked unlocked dozens of times a day?

I'm using a normal, chain-based lock at the moment and I'm annoyed because


I'm doing constant slight damage to the frame when removing the lock from the bicycle
I need to carry a key at all times, fumble it from my pocket when it's time to go (often in a thankless, noisy, roadside environment), and fumble the lock back onto the bicycle


Are there any solutions out there that make frequent use as painless, and still as secure, as possible? I'm thinking about something that works like a remote-controlled car door lock. It should, however, still be possible to attach the bike to an object to prevent it from getting carried away.


  Related: best bike lock
For frequent use, I think it is hard to beat a lock that is built into the bike, e.g. the Axa Defender that is fixed to the fame of the bike and then locks the wheel; it also has a cable that you can use to lock the bike to the bake stand.  It’s great for a lock on a “everyday” bike, as you can’t forget to take it with you.