I found this on another site. i think its super
IFOF is a term that means "identification friend or foe" most commonly used in the aircraft industry. It is a thing on an airplane that tells people reading the signal if they are a friend or foe. We now have a system of our own. I got this from another site: Have you ever wondered if the skinny girl you see has an ED (A or M)? And proud of it? You so desperately want to ask, or even try to make friends but are scared? Well, no more ... since we have our ribbon "Ana is a lifestyle..." and its red.
I propose that we all get a red beaded bracelet. You can make it or buy them. Wear it daily or when you go out to secretly say that you are proud to be pro-ana or proud to have an ED that is. Anytime you see someone wearing a red beaded bracelet, capture their eye contact and point to your bracelet, and if they return the same point to theirs ... then they are ED friendly. If not, then its just someone whom is wearing one.
As for those who are older and feel silly wearing a beaded bracelet, wear a red t-shirt every Monday or when you go out on Mondays.
Please pass this along to every proED clubs, forums, websites (secrets/public) for we need to be known widespread secretly amongst us. So, copy/paste everyone!!!