More control with Clear-Site-Data and Feature-Policy
Both the W3C and WICG (Web Incubator CG) share ideas on two new new headers:
Feature-Policy. They both improve the security and privacy of users. While the first one can clean locally-stored objects, the latter declares features the browser is allowed to use within the origin, such as geolocation, cookies, and WebRTC. As a site-owner, you can use this to prevent a third-party from tracking your users.