I'm not sure what the TSA use but I'm pretty sure they don't really work. I've had multiple friends confirm a negative test for GSR when they'd just been at th

I'm not sure what the TSA use but I'm pretty sure they don't really work. I've had multiple friends confirm a negative test for GSR when they'd just been at the shooting range in the same jacket/etc. We still have people accidentally bring guns/knives on planes...