in LPRC Reports

Comparison Study of DR and RA Soft EAS Tags Johns Scicchitano Hayes 2010

Introduction
The goal of the test of the Sensormatic DR and the RA soft tags is to compare the two types of
soft tags on three different qualities. These three qualities are as follow:
 The percentage of tags that are successfully detected;
 The distance from the detection device in which the tags are detected;
 The variation in the distance in which the tags were detected.
This research examined a sample of 100 DR and 100 RA soft tags. The following report
describes the method used to conduct the research and collect data, the results of the analysis of
the data that was collected and the conclusions of the research
Research Method
A total of 100 DR and 100 RA tags were obtained for the research. Each of the 100 DR and 100
RA tags were mounted on an index card and numbered from 1 to 100. The measurement
equipment consisted of a tag detection device and an accurate scale that measured distance from
the top of the detector in millimeters. The measurement scale began at 0 on the surface of the
detection device and extended to a distance of 30 millimeters from the surface. Each index card,
with a DR or RA tag, was slowly moved down (from 30 to 0 mm) the measurement scale until
the detection device detected the tag. The distance from the surface of the detection device in
which the tag was detected was written on the index card. It was also noted on the card if the
detection device failed to detect the tag. The distance in which the tag was detected (as well as
the failure to detect the tag at all) was entered into a database. The data were analyzed using the
SAS statistical analysis and data management software. The statistical analysis of the distance in
which the tags were detected provided the following results: