ReadWriteWeb

There was a question posted on Slashdot yesterday in which the asker sought advice on an electronic cash register set up that would output sales data in an open format. While the asker was looking for information from the point of view of a shop owner, it got me thinking about data portability. There's been a lot of clamor over the past few months about who owns attention data and a major online movement has started with the aim of pushing companies into granting access to that data to the users who create it. But what about offline attention data? Should we demand access to that as well?