I searched for hidden codes, and found one symbol.

They eventually succeed, by reassembling the broken pieces of a mirror and deciphering the hidden code.

This hidden code has been described as a method by which specific letters from the text can be selected to reveal an otherwise obscured message.

He revealed to me a hidden code that explained why the world looks and behaves the way it does.

I believe the message contained a hidden code, ordering Reemul to destroy his benefactors.

A hidden code revealing the weakness of the alien creature was included in the instruction manual.

I tried to measure its rhythm, to decipher the hidden code.

Classified ads in the paper with hidden codes.

Written in a hidden code, Chad needs time to crack it.

Some companies have turned to the public interest in hidden codes as a way of making money.