Hand-held terminal for systems and machines with integrated security concept. In particular with complex production equipment, this mobile solution offers a good view of the process, since the operating personnel is always within sight of the tool processing. Through its low weight and practical, compact design, handling is perfectly suited for use in the automation sector. Input is effected intuitively by means of the membrane keyboard, which provides reliable tactile feedback when pressed. A wall suspension element is optionally available for putting the unit down or also for stationary operation. Visualisation and data management are effected by means of a web-based client-server application as well as a network function.