*I originally posted this thread under General Discussion, however I have discovered that there is no current way of accomplishing what I need accomplished, therefor I feel it's appropriate to post in the suggestion section. My Gamertag on Xbox 360 is MrPresident128, I am very interested in politics and government and as such I have built to-scale replicas of the White House, Pentagon and the US Capitol building on my map. As I have a group of dedicated followers that enjoy roleplaying on this map, I find it of the utmost importance to ensure security is as stringent as possible for the Federal Buildings and the executives that inhabit them. For quite a while now, I have sought a better system for weeding out potential wrong doers than simply removing their permissions or killing them, as I feel that removing permissions deletes the realistic roleplay element. I have a system in mind, almost like a metal detector, that will utilize weighted pressure plates to analyze whether a visitor to a Federal Building has anything in his or her inventory. If anyone knows of a way that I can make this work, or a better system in general, please contact me on Xbox (Gamertag: MrPresident 128) or respond to this thread directly.
You're asking for a very particular method of checking and potentially altering world/player game data outside the norm. This isn't currently possible on the XBox platform as command line cheats have not yet been enabled and hence... neither has command blocks.
I believe that a big reason for this is because 4J doesn't have a good GUI in mind for a console platform and wants to try and stay away from player imputed text based command line arguments. For that reason, I've been trying to play around with developing a GUI design that would help implement this and propose it to 4J as a possible solution to allow for command line like abilities and eventually lead an interface for a command block in general.
Once command blocks have been implemented, then you should be able to do what you have suggested above.