M4-series Messenger Droid
this small, Cybot Galactica message droid was designed to quickly and efficiently transport recorded information from one location to another, without having to rely on tempermental communications systems. It moved about on a small repulsorlift engine, and was programmed with several encryption and security routines to validate the receiver's identity. This series of messenger droids was known for its tenacity in delivering its message. There were many stories from both the civilian and military segments of the market in which M4 droids risked poor conditions or firefights to make their deliveries.