After the project’s realization, on a completed app we checked the accuracy of our hypotheses: we asked the client to test the remote in a factory shop by connecting the robot. It helped us to optimize the app and fix several mistakes. For example, in the first version, to control the robot users had to turn the virtual steering wheel, it turned out to be inconvenient. That’s why we changed the wheel into a slider, by moving it users can direct robot’s movement.