Of course a $50 electronic badge is more expensive & cumbersome than a sticker and pen. But worse? This is a badge for a conference about open hardware. Having

Of course a $50 electronic badge is more expensive & cumbersome than a sticker and pen. But worse? This is a badge for a conference about open hardware. Having a badge that encourages attendees to go home and repurpose it is a great way to achieve some of those cool ideas you listed. Hopefully some attendees will do just that!