CraziestGadgets.com

The green revolution is everywhere, even the hotel industry. Sustainable Cards is introducing electronic room key cards made of wood. These cards are biodegradable and much more eco-friendly than the now common plastic card. American hotels go through over 1,300 tons of waste from discarded and lost plastic cards annually. 70,000 of these wooden key cards will make their debut during the Democratic National Convention in Denver this year.

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