@OutOnTheMoors @bob This is the field I work in. I can tell you that facial recognition is far more along than the OP makes it sound. The software I've worked with has a less than 1% chance of misidentifying a person once they are in the system and under normal circumstances.
With that said using makeup wont help you much, it tracks by clothing and other features too and cares very little about tracking you for more than a day at a time.