Force Register After Viewing Certain # Of Threads

[mackin74]

I tried to do some searching for a mod to see if one existed, but I wasn't quite sure what to search for. I'm hoping someone can point me in the right direction if what I am looking for exists, but if not, I'll gladly put in a request for a paid modification.

Anyhow, here's what I am looking for....

I'd like to force guests to register after they have viewed a certain number of threads or after they have been browsing the forum for a certain length of time.

You see this a lot with new sites these days, where you are allowed to read a certain number of articles before you must register or log-in to continue reading.

Does anyone know if something like this exists at present?

Any help would be greatly appreciated (this is a hard one to try to do a search for because the terms used for this type of mod can vary quite a bit)!