UserFlairOptional

Sorry to dissappoint.

As for purpose, it is just a higher fidelity, deeper hook into measuring you as a consumer.

Nah, fuck em. Even the less sophisticated Wi-Fi approach is skeevy as fuck. I should just trust that the will only do what they say when given more than they need? Absolutely not. They might, but I wouldn’t rely on it.

They want to use your gyroscope to synchronize your movement within the store with their mapping of what products are on which shelves.

Historically this has been done by offering free in-store Wi-Fi and then triangulating the movement of cell phones within the store based on their signal strength from the perspective of the various Wi-Fi access point supporting the store’s network, but a gyroscope will even tell them if you crouch down or turn around.