YES RFID chips are now in almost every product.
You buy with credit card, tracked time, dated location add up the items etc.Your phone knew where you drove and the route.
You can even track behaviors via smart appliance or smart assistant ( Alexa, SIRI). The refrigerator reads the RFID item when its put in and or taken out. The smart microwave knows logs the amount of time an item was cooked. You Apple watch tracks your glucose level. It can map what you bought to eat, where and when you eat it via several perimeters.
Tom goes to buy cough meds 12 noon Mon . Tom returns to store Mon 9pm to buy more cough meds ( current med isn't working). Tom visits MD on Tues (tracked via phone.) Buys scrip meds at same drugstore 3pm Tues. Toms call MD on Weds 9am for return visit. Then buys new meds Wed 6pm ……
????? Is Tom getting bettor or worse ….following trends.