They used Native American languages.
by using Native American Languages <3
island hop
Island-Hop
island hop
Navajo code talkers helped to keep military communications secret by using their native language while making communications between Allied units . The Japanese could not decrypt the language since the Japanese had no means of understanding what the Navajo were saying to each other . The Navajo were stationed mostly in the Pacific Theater of Operation (PTO) .
Keep It a Secret was created in 1952.
To keep a secret = Guardar un/el secretoPlease keep it a secret = Guárdame el secreto
By not telling anyone the secret, keep the secret a secret.
Keep Me a Secret was created in 2003-03.
Can U Keep A Secret was created in 1989.
Can't Keep a Secret was created in 604.
The same way you keep anything a secret - you tell no one you can't trust.