Liquidice
DIS Veteran
- Joined
- Mar 10, 2019
- Messages
- 1,870
If you are on your phone app and on their wi-fi they know where you are.
Not as accurately as you might think - Wifi can give you about 20m (or ~60 feet) of accuracy on location and if there are enough WiFi APs to triangulate your position it is 5-10 meters (or 16-32 feet). Still not really enough to know you are for sure buying something, but combined with payment data - they certainly could (assuming you are using a form of payment they can easily link to you).
So in terms of building a profile specifically about you - they may not always have a complete picture, but can probably build an estimation.
But they more than likely have a decent macro view that they can use, the only thing I would still question is whether they are doing a good enough job analyzing the data.