IPhone app idea

This one is good enough and important enough that I don't mind sharing it with the world.

An app for exchanging public keys to build webs of trust. It would make the key swap between phones via secure Bonjour connection, and timestamp, geotag, and "phonestamp" the exchange (meaning you tie the exchange to your phone number and or the device ID of the iPhone). Ideally you would also photograph each other as part of the exchange procedure, and maybe even photograph a confirmation screen displayed by each other's phones.

The procedure should be as simple as a handshake - launch the app, confirm the person, take the pictures. All the info then gets published to various public servers and becomes a true record. People should be able to prove or disprove that they were in that location a that time, et cetera, with all that info.

Now, what to call it? Arachne? Ariadne? Clotho? Skuld?

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