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Instagram Unveils ‘Instagram Direct,’ Lets You Send Pics and Video to Specific People

Today was the day of the mystery Instagram event that had many a tech site speculating about what the Facebook-owned image sharing giant would announce. A couple of sources were close, but there's no longer any need to speculate because Instagram has let the cat out of the bag, and that cat's name is Instagram Direct.

Already live as I write this, Instagram Direct is a new service that will allow users to send direct messages complete with text and either photos or videos to a select group of people, rather than sharing them with your entire follower base.

Secretbook App Lets You Share Secret Messages Through Facebook Photos

Steganography is the art of passing secret messages in a way that most observers wouldn't detect even though the message is in plain view. Unlike cryptography, which attempts to transmit messages as nonsense, steganography uses security through obscurity, relying on the fact that most people aren't looking for secret messages in ordinary things. Passing notes in invisible ink would be one example.

Owen-Campbell Moore, a computer science researcher over at Oxford University, has been developing a method for passing secret messages through Facebook photo sharing.