System for detecting presence of ticket in passenger space of transport vehicle, has detecting unit which assumes there is no presence if no response is received to inquiry to activated ticket

摘要

A tickets are at least partially electronic media (1) which comprise communication units which exchange data with a check-in device (8) and a check-out device (13), and which have a further communication interface (6b) which is activated by the check-in device using a wake-up process. The space includes a space detecting unit (9) to whose inquiring the activated medium responds via the further communication interface. If no response is received, the unit assumes there is no presence.