Radio mics aren't encrypted or scrambled. All you need is a receiver and the right frequency.
The venue security is supposed to check for such receivers, just as it checks for cameras, but electronics are getting smaller every day. And that's probably why the quality is what it is — something hacked together to be snuck through security won't be as good as a full-size, full-power receiver. At least not yet.
i have a question about older MM CDs. im trying to collect atleast one LTD or FP of every single. and i know that old releases dont have LTD but some of them do have FP.. does The Peace, Do it! now and every single before Happy Summer Wedding have some type of FP?