Yesterday, the Commerce Department’s United States Patent and Trademark Office (USPTO) hosted the second annual First Lego League (FLL) Award Ceremony, where two teams of young inventors ages six to 14 each won an FLL Global Innovation Award and a $250,000 investment to help develop their ideas for the marketplace. Both teams invented products related to this year’s theme: food safety.

The Dublin, Ohio team Moderately Confused, inspired by food spoilage caused during delivery, created the “Erasable Barcode”; if the temperature of an environment becomes unsafe for food, ink attached to the barcode will obscure a portion of the label so that the spoiled product cannot be sold.

Similarly, after witnessing massive power outages caused by natural disasters like Hurricane Irene, the team S.I.S. Robotic Revolution of Shelton, Conn., created a “Smart Sticker” that attaches to food packaging and changes color when the package has been exposed to unsafe temperatures