RFID tags, also known as radio frequency identification tags, are microchips that can be affixed to a product or an animal and transmit data via radio waves in a wireless system. You can purchase passive RFID tags from Australia's leading RFID supplier online. 

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This data is beamed out using the RFID tags and the RFID reader is able to track this if it is in the line of sight even at a distance of many meters. These tags have an electronic circuit and the data that is stored in them is transmitted by signals. 

These are nothing but intelligent bar codes with which you can do tracking of every product that you put in the shopping cart. You can fill your cart and then just walk right out of the door. Items of your cart need not be checked out one by one.

The RFID tags will be able to communicate their signals which will be read by an electronic reader. This reader is connected to a bigger network that will send the details to the retailer. You don't need to wait for any more in long queues for your shopping.

Now, you can easily buy RFID tags for various kinds of tracking. You can easily avail of the RFID in a box which is available as an end-to-end solution at various online stores. This is the preferred solution for many retailers and manufacturers.