Tobii Dynavox Beam is the mobile application one needs to setup a connection between your phone and Tobii Dynavox Communicator. It enables people to send and receive text messages using the Communicator through a bluetooth connection. To enable text messaging on Communicator you simply install Beam on your phone, pair your AAC device and your phone using bluetooth and select the paired phone as your text messaging device in Communicator. You can find more instructions in Communicator.