Machine readable code combining preprinted indicia with hand-mark data
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United States of America Patent
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Sep 26, 1995
Issued Date -
N/A
app pub date -
Apr 8, 1994
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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