A mobile device with remote play application is used to operate a gaming machine with a separately releasable module (SRM). The gaming machine and the mobile device are connected to a gaming network. In response to a visual code displayed on the gaming machine being captured by the mobile device, both a web socket connection and Virtual Network Computing (VNC) session are established between the SRM and the software application. The VNC session reproduces a video button panel of the gaming machine in the remote play application. The gaming machine is operated via touch inputs to the reproduced video button panel. To limit a remote session to mobile devices in close proximity to the gaming machine, the SRM sends an audio code to the mobile device and only maintains the session in response to receiving an echo of the audio code over the web socket connection.