If you aren't tracking with identifiable data there's no problem. Tracking contents of a cart is not a problem, nor is how often a product page is hit. Keeping

If you aren't tracking with identifiable data there's no problem. Tracking contents of a cart is not a problem, nor is how often a product page is hit. Keeping log of when some space is occupied by a person is not a problem, at least if you don't anything else about the person.