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Once you complete this jigsaw puzzle with pieces made of electronic paper, through the pieces into the "repro-box", where they will be reprogrammed with new images according to RFID tags in each piece. Now shuffle-shuffle-shuffle and start completing the brand-new puzzle.
To prevent smart kids from
marking pieces of a complete puzzle, pieces of the same shape should be assigned a different spot in the picture each time the puzzle is reprogrammed.
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