I have business cards at my day job. The problem is that they have someone else’s name on them, and my boss doesn’t want to spend any money so I have to mark out the old person’s name and put my name on them. It’s pretty high class. I’d never get approval to buy a really awesome business card like this one.
MobileECG’s “electroCARDiograph” is about the size of a normal business card with contact pads for your thumbs. When you put your thumbs there, the little display shows you the ECG, which is a representation of heart activity.
It’s not accurate enough for diagnostics but it is accurate enough to see how cool the business card is. Power appears to come from a coin cell battery. Each of this gizmos would sell for $29 or you might be able to build one with the available schematics and code.