App that could save you from skin cancer Identifying a skin cancer could be as simple as scanning a freckle with your smartphone but researchers warn the system has risks. Health by Jennifer Dudley-Nicholson Premium Content What if pointing a smartphone at a freckle could save your life? This is the idea behind some of the latest advances in skin cancer-detecting technology, which are poised to get a boost as Google prepares to enter the market. The tech giant recently revealed plans to roll out an artificially intelligent, medically approved search engine for your skin that could name a rash or issue a warning about a suspicious mole.