It seemed there was some message hidden in the glance.

There is a temptation to seek a message hidden within.

It looks like a silver dollar and can be used to hide messages or film.

It should not carry another man's message hidden within its sounds.

In the next section, we'll learn about some of the earliest attempts at hiding messages.

And increasingly, new tools used to hide messages can quickly be found with a simple Web search.

There seemed to be no structured messages hidden in the signals.

It never occurred to me that there might be hidden messages within the text.

But while people hide messages, other people will always look for ways to discover them.

This is a game related to decrypting a message hidden by a secret finance.