Wireless tag passing determination apparatus

A wireless tag passing determination system comprising:

• a passage where it is determined whether a wireless tag passes on;
• and
• a wireless tag passing determination apparatus including
• an antenna that provides a plurality of communicable regions and a communication disabled region, the communicable regions being arranged alternately with the communication disabled region, such that the plurality of communicable regions includes both sides of a passing determination point in a longitudinal direction of the passage,
• a tag reader that determines whether to read a signal transmitted by the wireless tag, based on a signal representing electric wave transmitted by the wireless tag existing in the plurality of communicable regions and received by the antenna, and
• a passing determination section that determines whether the wireless tag passes by the passing determination point on the passage, based on a pattern of presence or absence of reading in association with a lapse of time, the pattern of the presence or the absence of the reading being a pattern generated when the tag reader reads the signal transmitted by the wireless tag, the pattern of the presence or absence of the reading including at least one result by the tag reader indicative of the absence of the reading and at least two results by the tag reader indicative of the presence of the reading,
• wherein:
• the communication disabled region is positioned between two of the communicable regions;
• and
• the passing determination point is positioned between the two of the communicable regions on the passage.