What's the price of getting your data? More data

A new California privacy law gives consumers the right to see and delete their data. But getting access often requires giving up more personal details

The new year ushered in a landmark California privacy law that gives residents more control over how their digital data is used. The Golden State isn’t the only beneficiary, though, because many companies are extending the protections — the most important being the right to see and delete the personal data a company has — to all their customers in the United States.

In the fall, I took the right of access for a test drive, asking companies in the business of profiling and scoring consumers for their files on me. One of the companies, Sift, which assesses a user’s trustworthiness,