This is a Bite Coin,

Not a BitCoin,

This is something to keep on your keyring and push into a trolley, twist 45 degrees then remove from trolley.

Yet to be tested.

Entry for 23 02 2015.

Redesign / rethink of
http://www.thingiverse.com/thing:632932

This may be on your keyring and people will think its a drole joke and play on words with BitCoin. Little will they know its for easy removal from trolleys (I'm going to test this tonight).

Don't use this design in clothes lockers or similar that require a £1 coin to operate. The Missing Edge may cause trouble and you don't want your clothes missing inside a locker and have to ask for help whilst (let's say) in your swimsuit(!).

Also the swimming pool may get angry if they get stuck.

Enjoy

-Bath Robotics

Aka

Eur Ing Andy Southern

http://www.thingiverse.com/bathrobotics/about