Walmart Masterkey Canada

I used @skripxx design but removed a bit of the coin. All it does is save a small amount of filament. I made it this way because when I would go to Walmart and forget to bring a loony they greeter would unlock a cart for me. I noticed their key had a couple slots in it.
The greeter could insert the tool, unlock the cart, and pull it out. First I thought maybe the slots had something to do with the ability to remove the tool but later realized that made no sense. But the slots do reduce a bit of the filament you use overall.
The works to unlock a cart and once unlocked just pull firmly and it will pull out of the cart. What that means is you can unlock a cart and then put your keys in your pocket. Or you can unlock carts for others. I use it to unlock 5 or 6 carts and leave them for others to use.
All in all not a huge change from the original but just my take on it.