A provocative web demonstration called "Since You Arrived Vol. IV" reveals what browsers reveal about users without explicit consent. Created by Matt at Rise Up Labs, the page collects standard browser data and displays it back to visitors. The project aims to raise awareness about how much information websites can gather through legitimate browser APIs, often without users realizing the extent of data collection.

The demonstration employs several tracking techniques including font fingerprinting, canvas fingerprinting, and device property detection through JavaScript APIs. While not using invasive methods like clipboard reading or favicon detection to check logged-in services, the page still gathers enough data to create a unique browser fingerprint. Unlike most sites, it explicitly discloses what it collects and sends only two anonymous events without storing cookies or personal data.

This transparency project comes as digital surveillance concerns grow across the web. The page is part of a series focusing on different aspects of data collection, from global activity to individual device details. By revealing what browsers voluntarily share, the creator hopes to educate users about their digital footprint. The project demonstrates that even without cookies or explicit permission, websites can construct detailed profiles of visitors through standard web technologies.