Well, ask CrazymanJR if you want to know.you can think it, but yet no proof.
xray is in a lot of varieties.
Texture Packs, mods, standalone clients, coord searching.
They should create a underground scrambler that only works when some-one gets near.
It is the only solution right now.
And we dont need it yet.
Try to complain (WITH A SOLUTION THATS THE ONLY WAY COMPLAINING WORKS) when you get bothered by full diamonds 24/7 when you are still not full iron.
I think its done @Buuuddy (asks for useless lock)