How does an RFID system work?

An RFID system consists of a reader (sometimes called an interrogator) and a transponder (or tag), which usually has a microchip with an antenna attached to it. There are different types of RFID systems, but usually the reader sends out electromagnetic waves with a...

How do I know which frequency is right for my application?

Different frequencies have different characteristics that make them more useful for different applications. For instance, low-frequency tags use less power and are better able to penetrate non-metallic substances. They are ideal for scanning objects with high-water...

Do all countries use the same frequencies?

No. Different countries have allotted different parts of the radio spectrum for RFID, so no single technology optimally satisfies all the requirements of existing and potential markets. The industry has worked diligently to standardize three main RF bands: low...

I’ve heard RFID can be used with sensors. Is that true?

Yes. Some companies are combining RFID tags with sensors that detect and record temperature, movement and even radiation. The technology can also be used in the health-care sector. For instance, Belgium’s University Hospital of Ghent has implemented a system...