The Philikoi used a secret code of communication: for the first names of members they had codenames while using aliases for others. So, Nik. Skoufas was A.G. and Kapodistrias was the "beneficial". They also used code words or symbolic words, i.e. a thorn was the enemy and the trees were the rifles. They had adopted a cryptographic alphabet as well as special gestures for recognition - greetings. Such evidence is hosted at the Library.