Unlike Bar Codes and Other Systems,_____ Devices Do Not Have

question 49

Short Answer

Unlike bar codes and other systems,_____ devices do not have to be in contact with the scanner to be read.

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Definitions:

Difference Threshold

The smallest change in sensation that can be perceived half the time by an individual, also referred to as the just noticeable difference (JND).

Cataracts

A medical condition where the lens of the eye becomes progressively opaque, resulting in blurred vision.

Signal Detection Theory

An approach to evaluate the capability of identifying information-carrying patterns from random ones that interfere with the information.

Absolute Threshold

The minimum intensity of a stimulus required to be perceived by the senses.