Machine readable code combining preprinted indicia with hand-mark data
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United States of America Patent
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Jul 19, 1994
Grant Date -
N/A
app pub date -
Jul 14, 1992
filing date -
Jul 14, 1992
priority date (Note) -
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Abstract
A method of entering a hand-marked response into a system by altering a predetermined modified bar code symbol in a manner so that the bar code is rendered readable. In this manner, bar code reading devices can be utilized to detect the hand-marked response. In an alternative embodiment, one of several potential responses may be marked and rendered non-decodable. A bar code reading device determines which of the several responses has been hand-marked by ascertaining which is non-decodable. Marking the response sheets may be aided by using an opaque template sheet or using a pressure sensitive overlay sheet.
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