I've worked on systems designed to send in-store customers custom, extremely time limited (< 1 hour) coupons based on where they are in the store and where they linger. Linger time being used as an indicator of purchase intent for a specific item. This does require that the customer has the store's app installed and running.
I've worked on systems designed to send in-store customers custom, extremely time limited (< 1 hour) coupons based on where they are in the store and where they linger. Linger time being used as an indicator of purchase intent for a specific item. This does require that the customer has the store's app installed and running.