A software developer can use a local browser, running on a local machine of the developer in a first location to access a real device (e.g., a smart phone) at a second location, such as a datacenter. The developer can select and control the remote device, in the second location. A mirrored display of the remote device can be generated on the local machine by transmitting a video feed of the screen of the remote device to the local machine. The developer can interact with the mirrored display, and the interactions can be transmitted to the remote device. The developer can activate an accessibility mode via the local machine to test accessibility features of a program.