There is disclosed a body worn mounting system (10) for a smart phone (30). The system (10) comprises a band member (12) attachable about an arm of a user. A track member (14) is mounted to the band member (12) and configured to extend at least partially along the forearm of the user. The track member (14) is configured to engage with the smart phone (30) such that the smart phone (30) is free to travel along the track member (14) between predetermined positions on the track member (14). Motion is applied to the smart phone (30) through the application of a hand motion which applies a force to the smart phone (30) causing the smart phone (30) to travel about the track member (14).