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Comment by throwway120385

2 days ago

Regular purchase of prenatal vitamins is probably a huge marker for either being pregnant or intention to become pregnant.

Just shopping in the store and lingering by those products for a few moments is enough for the algorithm to detect a possible pregnancy. They use Bluetooth beacons & camera software to see how long you look at everything in the store.

  • Facial recognition may be possible. BLE beacons were a useful technology that is dead now because even ten years ago it was being abused for this. It's fully blocked without a ton of jumping through hoops.