"That used to be the message that was in the highway code, " he said.

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The FBI determined Keyes left behind no code or hidden message in his writings.

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Its mission is to broadcast the message "Hi this is Niwaka Japan" in Morse code, using bursts of intense light to draw dots and dashes across the heavens.

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Zipwhip were able to write computer code to interpret the instructions sent in via text message.

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He says hidden in the code of Netsky-AC is a sarcastic message directed toward anti-virus companies, claiming responsibility for both.

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Four whole years ago and still it appears as if marketers would rather plan a campaign using Morse Code than do anything related to mobile and in particular, text message marketing.

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Young -- editor of a local history group -- remains confident, going on to say that "It's not complex" and that much of the message relies on acronyms that became prevalent in WWI due to the short battery life of morse code systems.

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Select Comfort bought ads in local newspapers, which instructed users to send the company an SMS message with their zip code.

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Printed inside the wrappers of the bars will be a code that can be sent back to a given phone number in an SMS message to see if it wins a prize.

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The "two-factor" verification system, which will be optional, asks users to register a phone number, e-mail account and six-digit code that would have to be entered, via text message, each time they log in to the site.

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