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Setting aside GDPR - Setting a 3rd Party cookie already fails in enough situations (Safari) that if you really wanted to trace a user cross several site, you'd
by fenier 9y ago
Setting aside GDPR - Setting a 3rd Party cookie already fails in enough situations (Safari) that if you really wanted to trace a user cross several site, you'd require a different solution anyway.
- bruno_rzn 9y agoI mean, since most of Tag Managers solutions let 3rd Parties set cookies, ads companies such as Criteo (for instance) must use them to trace users across several websites, no ? What kind of other solution do you think about ?
- fenier 9y agoYou can set the cookies but that doesn't mean the browser won't remove them, or a ad-blocker prevent them from being set in the first place. I'm saying if you want something that always works, cookies likely aren't it. You could do something like an iFrame, with the parent site passing information to the frame. Here's an example: https://medium.com/building-contently/tracking-people-across-multiple-domains-when-cookies-just-arent-enough-b270cc95beb1 https://medium.com/building-contently/tracking-people-across...
- bruno_rzn 9y agoThanks a lot. Very interesting link. Same question: this iFrame would be used to store information related to the user across websites, it kind of works like a cross-domain-cookie-replacement : could GDPR make these kind of tooling illegal ? Should we display a very specific popup to tell the user what those scripts really do ? And have an opt-out option ?
- fenier 9y agoDepends a lot about the data you are collecting I suppose. Not a Lawyer, don't know the use case. Can't really venture a guess on where it'd fall.
- kasey_junk 9y agoIt could make this illegal for sure. On your second point, remember GDPR requires opt-in.