how to secure my ea

 
can somebody tell me how to secure the ea through copy or edit when i give to someone ?Thanks
 
  1. Don't give them the source - they can't edit it.
  2. The ex4 can be easily decompiled currently. Any protection you put there will be easily defeated.
  3. You can put the logic in a dll (harder to decompile)
  4. You can keep the logic private and send out signals to the EA.
Reason: