A gaming system compatible with patron-controlled portable electronic devices, such as smart phones or tablet computers, is described. Via E-mailing or texting, a server can mediate communications between a user-controlled device, such as a mobile device, and an EGM. In one embodiment, for a transaction involving interactions with a user-controlled device and an EGM, the server can be configured to create a temporary e-mail or text message address. In particular embodiments, a transaction can involve transferring credits to or from the EGM or transferring game play related information from the EGM to a user specified location.