date:Jun 10, 2019
sors are combined with near field communication (NFC) tags a series of microchips that can be read by nearby mobile devices.
During laboratory testing on packaged fish and chicken, PEGS picked up trace amounts of spoilage gases quickly and more accurately than existing sensors, at a fraction of their price.
The researchers say the sensors could also eventually replace the use-by date a less reliable indicator of freshness and edibility. Lower costs for retailers may also eventually lower the