Ergonomically printed quarter shopping cart coin. This will unlock most shopping carts that require a quarter. This tool usually will not stay in the cart the duration of your shopping trip. It is meant to use to unlock and then stick back in your pocket or purse. There are some locks that it will stay inside the duration. Do not pull aggressively to remove. Simply return the cart and lock the previous cart into it to remove your cart coin. It is 3d printed in a sturdy plastic filament.
*Has been used successfully in Canadian and American shopping carts.