User login protect page

Hi!

I have a great wordpress site. One page of my site needs to be password protected in a why that a user can login with a password that will expire a couple of weeks later.

Once they login, they will be able to see the content of that page.

I’ve tried the password protect feature but the problem with that, is that it is only one password for all. I’d like to be able to give each of the users i encounter a unique password.

The password would be told to them in person and not something they need to ‘register’ for online. (unless that makes it easier)

Thanks in advance!!