I believe you're asking if there's a user interface to goTenna? If so, not in the current device. The UI is your smartphone -- the point is to conform to consumer behavior (i.e. the way you already text on your phone).
Our first prototypes worked over the audio jack (à la Square) but from both performance and form factor perspectives, having it work wirelessly over BLE worked better. That being said we can work audio and other data interfaces into later products for sure, we're just going MVP route ;)
