This only counts if they recognize you after you return. If they think that you're unique again, then the tracking didn't work at all. This was the case last ti

This only counts if they recognize you after you return. If they think that you're unique again, then the tracking didn't work at all. This was the case last time I used their tool, Panopticlick. Edit: I tested this current tool and it recognized me after I returned. Opened it first normally, I'm unique. Opened it in a private window, unique. Closed that and opened a new private window, and bam, one other previous browser had my fingerprint already.