The wireless PDT of the present invention employs a “display-on bottom” design which places the unit perfectly centered in the hand of the operator, allowing for the best possible viewing as well as providing comfortable single-handed operation. The high-resolution LCD display allows the PCT to show...http://www.google.co.uk/patents/US6976626?utm_source=gb-gplus-sharePatent US6976626 - Wireless bar code symbol driven portable data terminal (PDT) system adapted for single handed operation
