Protect yourself from airborne viruses with this nifty disinfection card. Works by releasing harmless chlorine dioxide through a reaction with the air. The chlorine dioxide immediately decomposes harmful substances containing viruses and bacteria in your immediate vicinity. It comes with a lanyard but if you have a work badge you can just add it onto your existing band. Product is effective for up to 60 days. Obviously it will work better in indoor spaces. It will reduce the function and the using time of the product in strong wind or outdoors.�So please use it indoors as much as possible.