Passengers using fake tests in order to travel is a problem that confounds the re-opening rules several countries have put in place to reduce the amount of virus brought into the country by travel.
95% of passengers on a single flight used an identical test in order to travel, with more than 190 of 200 passengers on the November 25, 2020 Pegas Fly flight EO429 from Moscow to Zhengzhou presenting photoshopped negative results.