Canvas fingerprinting was a new one to me:
<a href="https:&#x2F;&#x2F;www.browserleaks.com&#x2F;canvas" rel="nofollow">https:&#x2F;&#x2F;www.browserleaks.com&#x2F;canvas</a><p>&quot;The method is based on the fact that the same canvas-code can produce different pixels on a different web browsers, depending on the system on which it was executed.&quot;