Imagine a communication protocol that didn't require text, photographs, or any other typical message content; a virtual smoke signal. This is a clever iPhone case that will revolutionize how you chat with your friends—using technology that's been around for hundreds of years. Dennis Be Bel's S.M.S.—or smoke messaging service—case heats and vaporizes lamp oil every time a simple button is pressed, sending a small puff of smoke wafting up into the air. And if conditions are right, the person you're trying to message will see that puff, or several, and then respond in a similar fashion. It's completely secure because it's up to you and the person you're communicating with to come up with a way to translate the smoke puffs into messages. That is what artist and hacker Dennis de Bel is developing with his Smoke Messaging Service, or SMS, project.
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