Amazon patents spoilage-sniffing refrigerator

Spoilage-sensing refrigerator

A diagram indicates the location of chemical sensors in a proposed spoilage-detecting refrigerator. (Amazon Illustration via USPTO)

Years after making its application, Amazon has won a patent for a refrigerator that uses cameras and chemical sensors to sniff out spoiled food.

But if you’re waiting to get one-day shipping for a fridge that knows your fruit has gone bad before you do, you might want to put those hopes on ice. Or look to similar spoilage-detecting gizmos that are already out there.

The concept is suited to our foodie age, as well as the age of the Internet of Things.

In the newly approved patent application, Amazon inventor Simon Kurt Johnston starts with the obvious: “Food or drinks in the refrigerator will eventually spoil.”

It almost sounds as if Johnston is speaking from experience when he explains why a spoilage-sensing fridge is needed: “A user may not notice that food or drinks within the refrigerator are spoiling because these items may be stored out of sight (e.g., at the back of the refrigerator, in a drawer or bin, or behind another item).”

The solution? Seal off every bin, and put cameras and sensors inside. The camera system could be programmed to capture regular images of the items inside a drawer, and then upload them for processing with machine-learning algorithms to recognize the foodstuffs and compare them with a database of food spoilage.

Get the full story on GeekWire.

About Alan Boyle

Aerospace and science editor for GeekWire, creator of Cosmic Log, author of "The Case for Pluto: How a Little Planet Made a Big Difference," president of the Council for the Advancement of Science Writing. Check out "About Alan Boyle" for more fun facts.
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