Indeed, this already exists. It's like sending a 3D model to a 3D printing shop and getting a (pricey) result, instead of having a 3D printer at home. Different

Indeed, this already exists. It's like sending a 3D model to a 3D printing shop and getting a (pricey) result, instead of having a 3D printer at home. Different uses, appeal to different people. For example, an athlete interested in monitoring his body closely while exercising will prefer getting results within a few hours rather than days and the cost per test might be very relevant.