The procedure allows Android-based systems to exchange data with external hardware devices using the Universal Serial Bus interface, emulating a serial port connection. A common example involves connecting a microcontroller, sensor array, or custom electronic instrument to an Android tablet for data logging and control.
This capability is important because it bridges the gap between mobile computing platforms and specialized hardware. It enables the development of portable data acquisition systems, remote control applications, and custom interfaces for scientific, engineering, and industrial applications. Historically, developers relied on complex interfaces and custom protocols; now, standard drivers and established serial communication techniques can be utilized.