I've built a few boxes:
https://www.printables.com/model/355924-clickable-touch-id-b...
https://gist.github.com/KhaosT/1406a6b6bea38f59e059c2afcb39d...
You have to carefully tear down and extract the touch id sensor, and then remount it in a box. I went the battery route so it could stay wireless. The tradeoff is the box is bigger.
Thank you, just what I was imagining! I would prefer a bigger wireless box as well.