Dropped tags can be printed again through RFID target reading.
ProblemsSince it was difficult to control radio waves, when re-printing RF tags, there was a worry that RF tags other than the target tag were read.
SolutionBy using a scanner with a reading distance of 3 cm, only one tag can be read even with RFID. Even if there is more than one RF tag, only one target tag can be read.
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