Tracking parcels involves recording the delivery of the mail to a building and then to the office and desk of the recipient . The tracking points occur on movement from post-room to van, and van to remote site, and then on to the office and desk or reception area.. When the package reaches its final destination a PDA records the delivery together with a photo or signature of the recipient. At this point you may think that all the intermediary steps between sites cause extra work. However what actually happens is that the mail is in a mailbag and a single scan of the mailbag records delivery of all the contents of the bag at the remote destination.