You lose your shopping cart coin all the time. So you think to yourself, I'll get myself a removable key/coin. Until you're standing in front of a shopping cart where the key unfortunately doesn't work. This always bothers me, but I don't want to have 2 gadgets on my keys, so I created the ultimate shopping cart coin. It has a key with which you can unlock a cart. If this is not possible with a cart, you can simply use the separate coin inserted on the side. Both combined in one pendant.