it would work for a fridge (provided you use a high enough resolution image), though of course if you were to view that in actual size on a laptop, you would only see a small part of it. You could certainly put it on a big screen in lifesize... it will work with projectors too. There are some measuring tools in the viewer as well, which would allow you to measure the object or part of it, which can be very useful even if you're not viewing it in actual size.
Sorry about the patent ;-) I have mixed feelings on them too, but the reality is that patents can open doors in terms of getting funding and building a successful product/service.