what activates FADE protection in Operation flashpoint

[thatguy]

using the same serial #'s in copies that try to play any type of multiplayer (lan or inet) will result in setting off fade. The original ISO release allows you to put in any bullshit serial # and the main problem is that a LOT of peopel put in all 0's or all 1's or things like that. If someone with the same serial number as someone else joins a multiplayer game everyone using that serial number but the original player connected will have their fade set off. By uninstalling and reinstalling the game and putting in a sutibly random serial number you can play over lan or inet or single player without any worry of fade protection or having a clone cd copy.