How can I get a green angle into digital identity?

[Dave Birch] Now that I've discovered that an avatar in Second Life emits more CO2 than a Brazilian, I'm feeling guilty about the antics of Greasy Makarov.  I need to perform some fatuous, irrelevant action to salve my conscience.  No, wait.  I need a way to salve the conscience of the digital identity world. Aha! Got it.  The story that RFID allows Wal-Mart to reduce any unnecessary truck deliveries and even trips of customers to their stores by keeping their stocks up to date.  Excellent.  Apparently twenty four million customers visit Wal-Mart everyday and if RFID tagging can remove only 100,000 unnecessary trips by keeping the stocks up to date, then a lot less carbon would be emitted. It's a win-win-win.

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