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What I desperately want at this point in time:

A button next to every ad that says "why me?" that details every byte of my data scraped to generate that specific ad. Was it a GPS location from an hour ago? Did you scan through my photos? Did you figure something out from my youtube watch history? TELL ME!

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The small blue adchoices triangle logo in the corner of some ads, if clicked, will sometimes tell you some of that information. Like who served the ad, if they targeting was from the content of the page or an audience segment, etc.

That’s technically required by the GDPR - any data controller must give you all the data they hold about you upon request and be able to review or explain any automated decision. This would include ad targeting data.

The problem is that the GDPR isn’t enforced enough even at a very basic level, let alone technicalities like this.

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