InfoPath Dev

I want the user to be able to mark up the picture where ever they need not where I specify, is that something that could be done without using a tablet pen?

In info path can I put a picture as a background and allow users to mark certain spots on it.  For instance I need a picture of a car.  But, I need to know specifically where something is dented, scratched, or rusted.  Any help would be great.  Thanks.