Bike schemes

They have a brilliant bike scheme here, though I now understand it's also lots of other places.

For years we've had the schemes like I understand Boris Bikes to be. Now we've got this new one. Obviously you register. Then having done so you access the app on your phone and see where the nearest bike is, tag it and use it. As you tag the bike it releases the electronic lock on it's back wheel. Then when you've finished just abandon the bike wherever you are and release it using the app, which locks it again.

Brilliant. Though slightly weird to keep seeing untethered bikes littered around town.