Abstract: Remote control system is disclosed. The present techniques relate to a system and a method for improving connection between two devices, e.g. to enable one device to control the other. The method comprises receiving, at a remote computing device, a request from a secondary user device to diagnose a fault with the primary user device. The request is received on a first communication channel. The method further comprises a step of connecting, in response to the request, the remote computing device with the secondary user device. This is performed by using a secure communication channel which is different to the first communication channel. The method further comprises a step of sending a command message for the primary user device from the remote computing device to the secondary user device via the secure communication channel. Any response to the command message is then received from the secondary user device via the secure communication channel. The response is used at least in part to diagnose the fault.