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The first thing you would need to do would be to find a passive HF transponder that could be embedded in the pieces of your board game. LF technology might also work, and you might find passive UHF near-field tags that would work as well, but I would suggest that you start with HF.
You would need to embed a reader antenna into the board in such a way that you could then read the transponder in each piece at a specific location on the board. If your board game were chess, for example, you would create a network of antennas under each square. The antennas would need to be plugged into an HF RFID reader or reader module, which would use a multiplexer to fire up each antenna in sequence and read the ID numbers in the transponder on each square.
You would also require software to capture the data from the reader and store it in a database. You could use Bluetooth to transmit the data to a computer, tablet or smartphone running an app. I hope this information helps.
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