Originally Posted by
Trollkiller
The SPO-7 works by a density reading and would not pick up the ear buds. If you did have wires wrapped around the cheese the cop that gave you the frisk for "officer safety" could legitimately claim he feared it was a bomb.
X-rays do density by going through the object, MMWs go through clothes but bounce off of skin and other item to varying degrees. I don't think MMW could tell a block of cheese from a block of cheese with a cap in it.