Something like one of those points rewards cards with rfid and this could allow a merchant to get your purchase data as you enter the premises. Then with other rfid readers throughout the store you can pinpoint where $user spends most time and adjust $coupon for them to incite purchase. Or maybe multiple IR beams like this one in different parts of the store to have traffic metrics on the floor plan. Looks very nice from the design standpoint. It is something that will not register in the mind of the customer.
If this interests you:
This type of thing can be done at the hobby level. Since this is mostly an IR sensor with wifi connectivity talking to an API and sending mqtt data.
If this interests you:
This type of thing can be done at the hobby level. Since this is mostly an IR sensor with wifi connectivity talking to an API and sending mqtt data.