Underground Ticket / Underground Ticket

People often miss their destinations on the underground. Or sometimes forget where did they put their underground tickets. This is a underground ticket which can be worn on the wrist or hang on the packets, it can also give you are minder when you are near your destination.
On this ticket, there is a customized partial underground map which displays the section of the underground you are travelling at. When you are about to reach your destination station, it receives a signal from the platform and the blue arrow sign on the ticket will lights up to remind you that you are arriving at the station.