Basics of RFID and its application in real world

Radio-frequency identification (RFID) is the use of radio frequency electromagnetic fields in order to transfer data so that the tags attached to objects can be automatically identified and tracked. These tags or labels contain electronically stored information.

RFID inlays consist of an integrated circuit and a Dipole antenna. This antenna is attached to the IC with the help of a strap. There are two types of RFID inlays namely “wet inlays” and “dry inlays”.

·         RFID wet inlays have an adhesive backing along with a clear or coloured top surface which is made of PVC, PET, or paper. This PVC/PET wet inlay is used for making RFID labels in which the inlay is placed at the back of the label in a manner such that the adhesive side away from the label side in order to ensure that the label has continuous adhesive.

·         RFID dry inlays are the type of inlays that are attached to backing substrate material referred to as the web.

RFID inlay HF label are useful in providing a shorter read distance (several centimetre to less than 1 metre) and operate at 13.56 MHz. They are resistant to external interference and higher data transfer rates. Various applications of RFID inlay HF label are in the field of pharmaceutical and healthcare; library, documents, media and files; and contactless cards and tickets.

NFC label is more like RFID; the difference lies in the distance from which it can be used. While RFID can be used in a range of few centimetres to less than 1 metre, NFC can be used for a maximum range of 10 centimetres (4 inches). Mostly used in products and promotional items wherein the digitised information may become handy.

RFID apparel labels is a technology used to track inventory are used to track apparel items in stores in order to track the efficiency of the supply chain so that businesses can improve their transport services, predict the demand of a product, avoid mark-downs and write-downs and hence improve their profits and revenue. This technology also helps in item level deployment at retail stores where RFID tags are embedded in hang tags of existing apparels to solve the challenges faced by retailers such as stock-out and exact level of inventory. Not only does it benefits the retailers but also helps the customers in quickly and easily finding the style and size they have been looking for.

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