"Terahertz Wave-Based ID Tag Authenticates Items for Anti-Tampering"
MIT researchers have developed a tiny, tamper-proof ID tag that utilizes terahertz waves to authenticate items, offering improved security over traditional RFIDs. By mixing microscopic metal particles into the glue that sticks the tag to an object, a unique pattern is formed on the item's surface, akin to a fingerprint, which is used for authentication. The tag is small, cheap, and secure, and a machine-learning model helps detect tampering with over 99 percent accuracy. This innovation could be implemented throughout supply chains and on small items like medical devices.