Designing and Producing 2FA tokens to Sell on Amazon
Case. Must have case. A bare board is not a consumer product.  Consider just dipping the thing in Plasti-Dip, without submerging the connector.  For a better feel, put the button on the solder side side, and put a thin piece of plastic U-channel sized to fit the board over the component side to give it a flat surface. Then Plasti-Dip.  No custom injection molding, and the user can still push the button through the Plasti-Dip.Other than that, great idea. It's how PayPal started.