After Apple's news at its developer conference Monday, you can expect some more squealing.

At Apple's Worldwide Developer Conference, the company showed some new restrictions it's imposing on online tracking technology.

So this year, we are shutting that down," said Craig Federighi, Apple's senior vice president of software engineering, speaking to thousands of developers at WWDC in San Jose, California, and many more people watching the keynote address online.

He showed how Safari will show an alert saying, in one example, "Do you want to allow Facebook.com to use cookies and website data?"

For another thing, Safari will reduce the amount of information about its abilities that Safari shares with websites -- things like plugins and fonts you have installed.

That makes it harder for data trackers to fingerprint the combination of parameters that can help fingerprint you for tracking purposes.

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