Yeah the method was the newer scanners they are using. Most of them are like this:

https://mdtsecurity.cc/solutions-products/l3-security-detection-systems/provision2/

It does a 360 degree scan of you like a CT machine (but using mm waves, instead of X-rays and such)

Automatic Target Detection (ATD)

Quickly screens passengers for a broad variety of aviation targets both metallic and non-metallic: weapons, standard and home-made explosives (sheet and bulk), liquids, gels, plastics, powders, metals, ceramics, and other objects

And unless I keep my legs spread while waiting in line, it nearly always triggers my groin because to much warmth. So they do a nice personal check with their hands just in case feeling the creases (Has happened to me 3 times out of 5) I run hotter than most people though