RFID Explained

<p>Radio Frequency Identification (RFID) uses readers and tags to transfer data via radio waves. A reader can communicate with a tag some distance away (between a few centimeters and 20 meters, depending on the type of RFID). Active RFID tags have batteries, which they can tap to send information to a reader. Passive RFID tags do not have batteries; they use a reader&rsquo;s electromagnetic energy to communicate with the reader.<br /> <br /> Unlike barcodes, RFID tags can be read even if they are not within a reader&rsquo;s line of sight. Compared to barcodes, RFID tags are more expensive, bulkier and more prone to physical and electrical damage.<br /> While RFID tags are often placed on top of or inside objects, they need not be. You can bury an RFID marker one inch below the ground and put information on that tag indicating what kind of material is further below the tag, and at what depth. For example, data on a tag one inch below ground could reveal that a sewer pipe exists 8 feet below the tag.</p> <p><a href="https://medium.com/lansaar/rfid-explained-970e9e0b13d4"><strong>Click Here</strong></a></p>