But if something happens to the Codefix server and that message doesn't get sent, the other two partners know something is wrong.

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The server also includes Microsoft Message Queuing to support asynchronous delivery of data to devices without a persistent connection.

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But after the time limit specified by the sender, the decryption key is erased from Disappearing's key server, making the message unreadable and effectively destroying it, even if the recipient stored it.

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The server would then send back a message that only the unique Pico computer would be able to decrypt with its own secret key assigned to that service.

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All questions and answers are transmitted by text message between mobile-phone users and a remote server that concocts imaginary dates.

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When the recipient opens the e-mail, the message retrieves the decryption key from Disappearing's key server and it's displayed in decrypted form.

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The server, known as VUUM, can handle all popular message formats for all message modes (text, audio, still images and moving images).

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