I have been to tournaments where nothing electronic is allowed in the playing hall. I have been to a tournament where someone was in a bathroom stall on a cell phone talking to someone, going over the first 11 moves of a game, and then proceeds to say: "So what move should i play now?"
I went to the TD, and was told "There is nothing i can do since i didnt hear it" I said they are stil in the bathroom...nothing was done.
Anytime you involve the human element things can and will go wrong.
With a chess engine in everyone's pocket these days, how is cheating prevented? Are players searched? What about hiding a phone in the bathroom? What about an assistant in the audience evaluating moves and casually whispering (g5) as you walk by him to the bathroom? Are their metal detectors? Electronic detectors? Are people in the audience allowed to have phones? Are they searched? Etc.
I read about a time where the location of where a friend was sitting in the stands was the clue to where the next move should be.
I could imagine a chess player wearing some kind of vibrating device and getting moves in code.
It just seems like their are so many ways to cheat. Just curious as to how it is prevented, and if people think that enough is being done?