DIGIMIND

It’s 8 o’clock and you’ve just arrived at work, with just enough time to have a coffee. You’re out of luck. This morning, as usual, there are no cups left in the dispenser. With RFID, this situation will soon become a thing of the past because your supplier will be notified as soon as the machine reaches the minimum quantity of cups.
Radio Frequency Identification (RFID), or Radio-identification, is a technology that provides a unique identifier for data at a distance via radio waves.
An RFID system is made up of an “RFID tag” or “interrogator” and one or more “readers”. The reader and the interrogator communicate by the emission of a magnetic field without any physical connection.
Download : "Red Book : RFID"