Disclosed are methods, apparatus, and systems, including computer program products, implementing techniques for securing a gaming machine for a player of the gaming machine using a mobile device such as a cell phone associated with the player. A player input requests securing of the gaming machine. Responsive to the player input, an access code and a security code are retrieved. The access code defines an access point of a communication system. The security code is specific to a game play session for the player at the gaming machine. The retrieved access code and security code are provided for the player. When the mobile device accesses the communications system and submits the security code, a secure signal is sent to the gaming machine, instructing the gaming machine to enter a remote game play state. The gaming machine can be released from the remote game play state responsive to a releasing event. In one implementation, a wireless interface enables communication between the mobile device and gaming machine according to a wireless protocol such as Bluetooth.