There is more to RFID than just tags that exchange data with readers wirelessly in response to electromagnetic stimuli. There is also middleware to filter out repetitive and irrelevant data, and to translate raw feeds between tags and data structures that software applications can use. The main obstacle to the spread of RFID in manufacturing is the success of barcodes, the previous generation of auto-ID technology. In most applications, reading barcodes requires human intervention, a clean, high-contrast environment, and often more than one attempt. In addition, not only is the amount of data that can be stored in a bar code is much smaller than in an RFID tag but it cannot be updated.
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