From their privacy policy: "When you install Vivaldi browser, each installation profile is assigned a unique user ID that is stored on your computer. Vivaldi will send a message using HTTPS directly to our servers located in Iceland every 24 hours containing this ID, version, cpu architecture, screen resolution and time since last message. We anonymize the IP address of Vivaldi users by removing the last octet of the…
Yes, it is enough: https://panopticlick.eff.org/ PS: my result Your browser fingerprint appears to be unique among the 1,852,797 tested in the past 45 days. Currently, we estimate that your browser has a fingerprint that conveys at least 20.82 bits of identifying information.
I am a linux and firefox user in Brazil. I am probably very easy to track combining this information with my geolocation and ISP.