So, the only way they can detect if you have the "variant" is if you take their test to tell you you have the variant.
Absolutely no possibility for fraud there…
“There are reports coming in that vaccinated populations have cases of infection, particularly with the delta variant,” Dr. Soumya Swaminathan, the World Health Organization’s chief scientist, said at a press briefing Monday. “The majority of these are mild or asymptomatic infections.”
https://www.cnbc.com/2021/07/12/most-fully-vaccinated-people-who-get-covid-delta-infections-are-asymptomatic-who-says-.html