For those of you unfamiliar with the work I've been the chief software engineer on an NFC project called PixelStix and we've been adding IOT capabilities to stationary things like walls, picture frames, and now ancient coins. Ancient coins made sense to me because I love learning the story about the cultures attached to the coins but am at a loss with how to 'attach' all of the digital research to the coin. The Tetradrachm was too huge! At 26.5mm the tet simply covered too much of the underlying 38mm NFC tag to work properly. The solution was to go really small with the technology so that it can be tucked away down into the corner of the flip. Simply re-assigning the PixelStix code from one tag to another worked great and it still adequately scans from within the acrylic case I use to store my ancients. Some action-shots. Shot of the Antiochos tet free in the case with the PixelStix resting beneath it. Hovering my phone over the case picks up the data just fine. Notice the other coins have the standard 38mm PixelStix beneath them. Due to their size, they scan just fine without any 'creative ideas'. In hindsight I could have gone the other direction and put a 45mm tag under the coin but that would have caused problem with the flip folding properly around the technology.