David Norris wants to collect the digital equivalent of
fingerprints from every computer, cellphone and TV set-top box in
the world.
Companies are developing digital fingerprint technology to identify
how we use our computers, mobile devices and TV set-top boxes.
WSJ's Simon Constable talks to Senior Technology Editor Julia
Angwin about the next generation of tracking tools.
He's off to a good start. So far, Mr. Norris's start-up company,
BlueCava Inc., has identified 200 million devices. By the end of
next year, BlueCava says it expects to have cataloged one billion
of the world's estimated 10 billion devices.
Advertisers no longer want to just buy ads. They want to buy access
to specific people. So...