I was wondering whether anyone knows of a plugin that will allow users to put in a specific code that will then take them to a specific URL. Allow me to expound: I am a wedding photographer, and currently my "Client Login" is a little rough - clients have to select their name from a list to be able to view the password protected page for their gallery. What I would like is a simple page where they can put in a specific, individually-assigned code that will serve dual purposes of being a link to their gallery, but also their password.
1) Client gets assigned "wCc98a" as code
2) Client goes to website
3) Client enters individual code
4) Client is taken to their gallery
I'm not sure if this exists for wordpress (I've seen it elsewhere), and I'm not even sure what this would be called. Any help would be much appreciated, and I'm not limited to free plugins.