Doesn't sound like a scenario where Dexpot would be of any use. You'll probably have to look elsewhere.

My startup company is looking for a solution where could have smaller desktop inside another desktop. We are specialized in rear projection shopping window solutions. We now have a customer project where the smaller desktop should be a interactive UI and the bigger desktop would be for advertising video etc.

We are now using video projectors that have picture-in-picture capability. A software solution would give us possibility to choose our projectors more freely.

Does anybody know how to solve our problem?