Unlike people, robots are tireless and provide exact numerical feedback on flaws, the magazine reports. For example, Intel’s robots do stuff like type and play cell phone games on a testing device while training a camera on the screen and recording data on how the screen responds to the robot’s finger. All major technology companies use testing robots, but don’t talk about it for fear of giving away an advantage to a competitor, Jason Huggins, co-founder of an app-testing company called Sauce Labs, told MIT Technology Review.