The patent, ominously titled "Physical Store Online Shopping Control," is for technology that examines what a person is searching for when connected to a retail WiFi network -- that is, a WiFi network provided by and located within a store, such as an Amazon bricks-and-mortar location. The technology can actually determine whether you're searching for a competitor's item online and take subsequent action.

If the tech finds that you are, indeed, comparison shopping on your phone, it will take one or more "control actions," including fully blocking access to the content, redirecting your phone or sending a sales representative to talk to you. It can also check whether Amazon's product is more desirable -- say, lower priced -- at which point, it will allow you to see the information.