Aquatica has all new lockers. You use a self-help machine to buy your locker, it has a touch screen and you can use either cash or a bank card. Once payment is verified (regular locker price has gone up to $10), you have to create a 4-digit pin, then you type it in again and then a locker number is assigned to you. You find your locker, it has a mechanical keypad, you type in the pin you created, hit the enter button and it opens. When the locker closes they automatically lock. System worked ok, they have a bunch of rental machines 10, maybe more, you wait in line to use them. When you are done for the day, the locker itself has an end rental button, so no waiting in line to return a key. Downside is that of course you have the remember your locker number the whole day.