Chapter 1
Introduction
Barcoding is the most common Automated Data Collection (ADC) technology providing timely, error-free information that can be used to increase productivity, accuracy, and efficiency in the workplace. Virtually every type of industry is using barcodes to replace keyboard data entry. Studies have shown that a proficient data entry operator will make one error for every 300 characters that are manually entered. The error rate using barcodes is almost negligible and can be error-free using barcode symbologies with the check digit enabled.
A wand is a pen-style scanner requiring physical contact with a barcode when scanning. The wand is simple to use but does require the user to maintain a tilt angle above the label surface. This controls the reflectance of the light that is absorbed. A constant or continuous scanning motion across the barcode must be maintained to regulate the sample rate. The speed in which the user moves across the barcode is also important. If the continuous scanning motion is too slow or too fast, the decoder may not be able to detect the signal sent to it by the wand.
