I watched the video presentation, what's the take-away from it? Yes, different environments have different properties, but we knew this since the first browsers

I watched the video presentation, what's the take-away from it? Yes, different environments have different properties, but we knew this since the first browsers appeared. Is there anything new? This does not lead to an unique fingerprint. Is it more about the automated system that detects the properties that change or just bringing awarness of the issue?