Some kind of common recognition storage and retrival routine.
There has been discussion in many topics about looking and looking closer at something.
There are some chracters that would rip their eyeballs out if they were told they were blue and the player could not correct. Use numerics instead?
It could be like keys but with two parts.
34875-23098
34875 is what you see without looking too close.
23098 is what you see by looking close {which should be accompanied by a message "a man stares at you"}
Disguises can change the first number but not the second. Or if there were many levels to disguise there could be more keys requiquiring more levels of looking.
This keeps thing abstacts so people can still say they have whatever eyes they want to say but chracters can exchange vital information. There could even be another hidden level of numeric to say whether the information was exchanged correctly between chracters. {So RK can still go in an shoot the wrong guy on accident just the accidents would be more rare}
Now...
Apply the same logic to
coin presses
footprints
fingerprints
signatures {sealed envelop}
And no one will ever find this post hidden under seasons
Did I mention I finally got to watch the third matrix movie?
