Researchers at the University of Glasgow have developed an innovative wireless tagging system that can identify objects and measure temperature without using traditional microchips.

Instead of relying on RFID chips, the new tags utilize cost-effective coils and a PDMS-based sensing material—a combination of silicon rubber and carbon fibers. These small coils absorb electromagnetic signals from a handheld reader, eliminating the need for built-in electronics.

Beyond object identification, the tags can provide real-time temperature readings and can be scanned using affordable wireless handheld devices priced under £100. Their potential applications extend to smart packaging, where they could monitor pH and humidity, enabling retailers to detect food spoilage or contamination.

Their lightweight and flexible nature also makes them suitable for healthcare and smart clothing, where they could discreetly track vital signs.

Dr. Mahmoud Wagih, lecturer at the James Watt School of Engineering and lead researcher, highlighted the importance of wireless sensing tags in enhancing supply chain monitoring and sustainability.