"To control the device" means being able to make the device do what you want by giving it instructions or commands. You have the power to decide how the device behaves or functions. Full definition
You will also want to take pictures of any traffic control devices such as stop signs, yield signs, traffic lights, etc. that are located at the scene. (4autoinsurancequote.com)
Once done, this helps you to set schedules and remotely control devices for an automated, modern, smart home. (indabaa.com)
The user could wear a single ring or multiple ring to control a device with more complex gestures. (patentlymobile.com)