The idea is good - add optics to your smartphone to turn its camera into a portable digital microscope. In the past several years I've seen several designs of varying quality. I just saw an Apple ad that features one by ProScope - specifically the Micro Mobile. Other models by the company are well designed and built - my dermatologist uses one - so this one is worth consideration if you are in the market. A nice feature is you can purchase $20 adapters so it isn't tied to one device that is likely to be obsolete in a year or two. Check out the videos on the lower right side of the page.