[loco5niner]

They did the same thing to collect walking data using the game Ingress, and Goog-411 to collect voice data.

Well specifically, Niantic, which was a google internal thing.

[jamesgeck0]

I could swear that close to the launch of Ingress some Niantic employee said something along the lines of, "We're not actually collecting much data. It's all secretly an evil plan to get nerds to exercise," but I can't find a source.

[GauntletWizard]

I believe you, but I'm also confident that your quotation was said in jest.