The linkage means 17-20 could be manually adjustable bar code reader.

摘要

A portable hand-held optical scanner (20) comprises a disk-shaped housing (28) which fits within the palm of the hand of a checkout operator, which scanner (20) includes a scanning mechanism for generating a scanning pattern for scanning coded indicia, a strap member (26) for securing the hand of the operator to the housing, a switch (30) mounted on the rear surface of the housing (28) adjacent the fingers of the operator for easy operation by the operator, a data processor (64) and a transmitter (62) for transmitting the data read by the scanner to a remote pickup.