In September, Google added a Do Not Track (DNT) option to Chrome's precursor, the open-source Chromium, and reiterated that it would meet its end-of-year deadline for baking it into the "stable" build of the browser.
In February, Google had said it would add DNT support to Chrome after the White House said it would introduce new online privacy legislation in Congress.
Chrome was the last major browser to commit to DNT, and the last to roll it into its code. Previously, Microsoft's Internet Explorer, Mozilla's Firefox, Apple's Safari and Opera Software's Opera had added support for the setting, which transmits special information with every HTTP page request to tell sites the user does not want to be tracked by online advertisers.
Opera just barely beat Chrome to the finish line: Its version 12, which was also released Tuesday, appeared several hours before Chrome 23.
Chrome's DNT setting appears under the "Privacy" section of the browser's Settings screen. The latter is dubbed "Preferences" on OS X.
To pull up the Privacy section, users must first click the "Show advanced settings..." link at the bottom of the Settings page. Checking the box marked "Send a 'Do Not Track' request with your browsing traffic" switches on the privacy feature.
Like all browsers except for Microsoft's Internet Explorer 10 (IE10), Chrome leaves DNT turned off by default.
Google, one of the Web's biggest purveyors of online ads, has been noticeably hesitant to adopt DNT, and in a blog post, Ami Fischman, a Google software engineer, hinted at Google's continuing lukewarm support.
"This latest release also includes an option to send a 'do not track' request to websites and Web services," wrote Fischman. "The effectiveness of such requests is dependent on how websites and services respond, so Google is working with others on a common way to respond to these requests in the future."
Although browsers have implemented DNT, Fischman has a point: The crux is websites, which must enable it on their ends. Twitter is the largest online service, by far, to have implemented DNT.