A system for tracking transported grain. A writer records data into an RFID tag. The data includes at least a time when the RFID tag was handled with surrounding grain and information sufficient to determine a location of handling at the time when the RFID tag was handled with surrounding grain. A reader retrieves the recorded data from the RFID tag.

 
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> Program stored in medium readable by computer for measuring optimum feed amount to RFID antenna, feed amount measuring method, and printer having RFID read/write function

> Systems, devices, and methods for reading machine-readable characters and human-readable characters
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