Abstract: A method that enables the post to deliver letters, flats, post cards and packages (mail) addressed to a recipient's virtual post office box and then to be delivered directly to the recipient. The process enables individuals or entities to rent a virtual post office (VPO) box i.e., a box that does not physically exist, from the post office (“post”). Mail addressed to the virtual post office box would be captured by the post during the post's sortation process and rerouted to the specified address of the renter of the virtual post office box.

Abstract: A film positioning system for dental X-ray and digital radiography procedures including a number of film or digital sensor carriers (bite wing, anterior, etc) each including a film or sensor holder on one end and an extending attachment rod, and an X-ray tube aiming device including an attachment rod holder, the attachment rod and the attachment rod holder keyed to correctly align the film holder with respect to an X-ray cone or tube. One example includes a non-equilateral pentagon shaped rod holder receptacle and a non-equilateral pentagon shaped attachment rod.