Dumb question about PerfectCanvas empty request

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  • Hi guys.

    As I got PerfectCanvas means that FP service generates image on machine that match to fingerprint that will be returned and returns it as part of fingerprint. Important it generates image/data based on provided PerfectCanvas request which somehow contains information what particular website tries to draw. So it draws it and generates PerfectCanvas for particular combination fingerprint and one or many websites' requests. If I am correct so I do not understand what PerfectCanvas data fingerprint service returns when PerfectCanvas request is empty? There is no PerfectCanvas request, it means nothing to draw. What PerfectCanvas contains then? What do I miss?

    Thank you