One time action code to access site

Good afternoon all!

I have a question: We are currently using opencart 2.2 for a pre-order campaign for a limited number of customers. That's why we added a password on our front-end, like so:

http://www.ato-gear.com/store

This is currently done using the following extension:
http://www.opencart.com/index.php?route ... %20protect

Which works great, but we'd like to make it so that every password can only be used ONE TIME (an action code that expires after use), which is not the case with this extension. Is there any extension available to achieve this?