There was a packaging warning about dangerous bacteria in products.

Canadian scientists have created a packaging tray that reports the presence of salmonella, E. coli, listeria and other dangerous bacteria in raw meat and other products. The tray has sloping sides. Thanks to them, the juice from the food flows to the sensor at the bottom of the package. Its indicators can be read using a special mobile application. So buyers will be convinced of the safety of products. Such technology will replace expensive and time-consuming food tests in laboratories, and will also reduce the number of poisonings. Every year, up to 600 million people are affected by infections due to tainted food.