Have you ever used an unmanned vending machines? Compared with the early unmanned vending machines, there will be no more embarrassment of "paying but no goods" for unmanned vending machines.With a new type of unmanned vending machines, you just scan the payment code and open the door, take out goods, and close the cabinet door, and the system will automatically settle the price.

There has 20 boxes milk ,20 bottles juice ,25 cans coffee and 40 cans soda in cabinet, or more than 5 boxes of instant noodles and 10 bags of cake. These add up to a rough calculation of seven or eight hundred yuan, but maintenance personnel can rest assured bold, let the cabinet "manage" these goods.

Is there any way to "cheat" unmanned vending machines and take the goods from the cabinet freely?

unmanned vending machines

Just take it? Every commodity has an "identity card"

When you take out the goods from the small cabinet, you find a label stick on the items; through the light, the label seems to have a "antenna ". This is the "ID card" for each item .

Goods with RFID labels

The label is called RFID tag , and you may hear it for the first time, but RFID technology appears very early in our lives, like bus card, entrance card, dining meal card... All of they are use RFID technology.

Induction coil inside the card

A common RFID system includes a reader, tag, and application system. Every time you take away the goods, the RFID reader in the cabinet sends out a signal of a specific frequency, and the labels on each item receive the signal, some of they are converted into DC current activation tags,then the label send back its own data information to the reader, completing the commodity statistics. The system calculates the reduced number of labels and learns what you have taken.

With the decrease of RFID system cost, this recognition method is applied to retail goods gradually. Compared with QR code scanning, RFID has obvious advantages: faster speed and simpler operation.When paying, just put all the goods with commodity labels on the reader, the system can quickly identify all the goods. If you buy clothes, you can see the label hang on cloth is printed with RFID antenna.

Clothing label with RFID logo, internal circuit visible through light

RFID is replacing the QR code as a more efficient paying method. A lot of colleges and universities also use this kind of paying method in the canteen,using the tableware with RFID label, the system identifies the plate with different price directly when settling, it can read the meal price quickly, realize the quick settlement.

Place the plate and settle it

The unmanned vending machines will expands the advantage of RFID: no manual alignment scan is required, as long as the electronic label is within the reading range, it can be quickly identified.