That’s what I want to see from each of the data harvesters who want my personal information. A simple three-column table. First column: purpose of data collection (for example: “to personalize ads” or “to enable academic research.”) Second column: types of data collected or processed (for example: “web browsing history” or “information about previous purchases provided by advertisers”). Third column: consent (two checkboxes opposite every data type: “I agree” and “I object.”) In cases where the company considers consent obligatory for the service it provides — and only in those rare cases — checking the “object” box should result in a pop-up explaining why the company can’t live without this and providing a link to the local privacy watchdog’s complaint form.