Restricting use of data according to lat/long?

Hi!

First time poster, and apologies if this is a stupid question. I've done my best to search the forums (and the old ones) and the answer wasn't immediately obvious.

I'm still a bit overwhelmed by extension development, but I was wondering if someone could guide me in the right direction in terms of wanting to restrict the use of spatial data to a specific region (possibly specified by lat/long). Would this even be possible?

I'm aware it's somewhat of an artificial restriction, as one would only have to modified their data to fit in the allowed region to overcome this, but nevertheless, I wonder if this can be done.

Thanks!
- Jason