Why do my hands always get tested at the airport?

I fly about 4 times a years, so that's 8 flights a year. For some reason, I always get my hands swabbed. They always say it's random testing but it seems weird that I'm always the one picked out.

Am I setting an alarm off or something?

conley392014-12-27T20:32:44Z

It's possible to get selected by a random process multiple times in a row. I was selected on my last flight, but it was only the second time in the last year.

ben2014-12-27T15:04:05Z

it is quite frequent to be checked, it's probably a coincidence