Using Unary alphabet to express a cyber message, the identities of the message bits can be used to carry a companion message. The P (prime) message, and the C (companion) message can be related or unrelated. The C message may be used to authenticate, or to invalidate the P message and its writer. While the P message may be in the open, the C message may be limited to key-holding readers. The C message may be modified by successive readers while leaving the P message unchanged. A wide range of applications is available on account of the simple idea of writing the primary message via bit-count (ignoring bit identities), leaving the identity assignments to carry the companion message. Alice and Bob may exchange a large number of primary messages, where for most of them the companion message says: “ignore the primary message”. While both Alice and Bob, reading the companion message will regard only the proper messages, an eavesdropper will be thoroughly confused, or receive a misleading impression of the conversation between the two. If the C message is generated via a private key, then a reader of the P+C messages will be able to authenticate the prime message and its writer with the respective public key.