![]() Whatever RFID reader you are using must be able to read the carrier frequency of the tag you need to read. They must also be using the correct radio frequency and, if encryption is used, have the proper keys. Simply having a reader and tag within range of each other doesn't guarantee they'll be able to communicate. No matter the application, the technology behind RFID comes down to electromagnetic waves. RFID readers are placed at the starting line and the finish line, giving the ability to know exactly when each runner starts and finishes their race. Keeping track of tens of thousands of runners is made relatively easy by giving each participant an RFID tag. The system will then determine if the secured door will unlock or not.Īnother example is tracking times for marathon runners. When the badge is detected by the reader, the reader will read the tag data, process the data if needed, and then pass the data to be validated by the access control system. A security badge is an RFID tag that contains a unique ID scanned by the reader. You've no doubt seen RFID being used in everyday life - for example in security badges. The little bit of data left on tags can be read-only or writeable, depending on how the tag was designed. ![]() Tags have a small amount of memory that stores a unique tag identifier (TID), which is not editable. ![]() Tags contain data, and readers detect the tag and process the information from the tags when in range (more on this later). Systems are made of two components, tags and readers. RFID is similar to other wireless communication technologies such as radio transmitters, Bluetooth, LoRa, etc. ![]()
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