Couple of questions I need before I can think about this.
1> About how many Humans are we talking here ? ( 5, 10, 50, or 500 ? )
2> Do they have Actions attached to them ? Is it always the same action ? Can we have the option to ADD a new action to them ?
3> Is it feasable for you to go though them all in WED and type a unique number into one of their skills? (last resort option)