[dcow]

Browsers don’t do that today and the result is that AD networks fingerprint and track you to try and serve you more relevant content.

The argument from supporters is that this is a step away from the “fingerprint and track” status quo MO. The argument from detractors is that it doesn't quite achieve that goal.

All you need to address your concern is for access to the API to be user-configurable.

[account42]

Anyone who believes that ad networks won't continue to do fingerprinting in addition to whatever privacy leaks Chrome adds is a fool.

[dcow]

Not if browsers actually limit access to that data needed to do so.

[youngtaff]

The API to be off by default i.e. it’s opt in and not opt out

And it should be behind a permissions prompt