[KaiserPro]

So was the plan to just yolo this out into the wild?

because the document says here that it was going to be given to trial participants as part of yougov(and others) survey. Which implies that they would have been informed/paid.

If its the former, then obviously thats unauthorised wiretapping. If its the latter so long as informed consent is given, that a shittonne better that the advertising tech we have now.