X'inhu Do Not Track (DNT)?

Do Not Track (DNT) is a browser setting, introduced around 2010, that sends a DNT: 1 header with every request to say "please do not track me." It was an honor-system signal with no enforcement, the ad industry never agreed to honor it, and adoption collapsed; the W3C abandoned the standard and browsers have been removing the setting.

Its successor, Global Privacy Control (GPC), has more teeth. It sends a similar header, but laws including California's CCPA/CPRA require businesses to treat it as a valid opt-out of data sale and sharing, and regulators have already enforced that. Under the GDPR, browser signals do not replace the consent framework, so GPC matters most for US traffic today.

For analytics, the practical takeaway: honoring DNT and GPC is easy and courteous, but it only becomes load-bearing when your tool tracks people in the first place. Tools that store no identifiers and no personal data, in the cookieless model, have nothing for the signal to opt out of, which is the simpler position to defend.