Photos: In London, Turning Access into Apps

Open
The Datastore is part of a larger policy of openness decreed by London Mayor Boris Johnson, who hopes the open information will give rise to "a great army of unpaid scrutineers and invigilators" who would keep city politicians aboveboard. One site built from the data, WhereDoesMyMoneyGo.org, makes it easy for citizens to see how their taxes are spent.

• Turning Access into Apps