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The invention relates to Systems and techniques for reading optical codes, and more particularly to code reading Systems with plural imaging or Scanning modules pointed in various directions toward a target Volume, which increase the like lihood that a code symbol on an arbitrarily oriented object in the target volume will be read. Other aspects of the invention relate to use and configuration of hand held readers, docking devices, operator Side rails, arched tunnels and mirrors for increasing the coverage of the System, Additional aspects of the invention relate to components associated with point of Sale installations or code reading terminals including inte grated Scales, input pads, System controls and displayS.