Comment by KermitTheFrog

It's not even close it's already here. Any your smartphone could be located in a city with 20-50m accuracy(5G/LTE) including your indoor height location. Plus add to this your frequent locations, your calls and internet activities, spendings(if it shares with your cellular operator) - and here you are. And we have a smartphone in every pocket. This market is big and each of the producers including fridges wants to bite off a piece of the pie.