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How does the blockchain improve people's control over their data compared to some telemetry settings in the cell phone app itself?

Also, the same app is being used to collect tracking data, market your unused power tools, and comment on city legislature? I guess these are excuses to get people to install it. A small tax credit to install a tracking app seems like it'd be more efficient.

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The blockchain can be used to enrypt the data you generate on a blockchain and entrust the user with a cryptographic token that can be used to generate different tokens that allow others to decrypt specific sets of data, like location tracking.

The tough part about this is that for the user to truly own their data, they must be entrusted with the root keys of their data, and if they lose it, and their backup pass phrase, the data is lost forever.

> the data is lost forever.

Unless someone copied it?

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