Drug smugglers have had mules swallow condom full of KILOS of various drugs for decades. It's a tried and true smuggling technique. Practiced by hundreds of thousands of smugglers over the years. Substitute PETN for Heroin and throw in a condom containing a small detonator with a remote control out of a child's toy car and you have instantly rendered useless a gazillion borrowed dollars worth of big brother photographing womens maxi-pads. The things are ABSOLUTELY useless, in addition to violating the rights of millions of travelers. In fact the WTMD and "wanding" 'might' find the detonator mechanism that contains metallic components but the strip search scanner wouldn't.
Al Qeada can't find a suicide bomber with a US Visa?????? It's easy now. They just need to find an unwitting subject who is willing to be a "drug mule" for big money. "Here, just swallow these condoms full of "drugs" and we'll pay you $100,000 when you "arrive" in America." I bet they will find many takers. "Drug traffickers" with big money to flash probably have a much easier time recruiting mules than terrorists have recruiting willing suicide bombers with US Visas.