ebay - cardamatic

From: Fred Cisin <cisin_at_xenosoft.com>
Date: Mon Feb 14 15:40:38 2005

> >Nope. Plastic card (credit card thickness, or less) with
> >pencil-sized holes in it. The "reader" is a matrix of electrical
> >contacts. You shove the card in it, it insulates the non-punched
> >contacts. Simple!
> >Alas, hard to reproduce the cards automatically. Easy with a hand
> >punch though.

xerog the cards with black paper behind them.
Let people who want them punch their own holes where the copy has a spot.
Received on Mon Feb 14 2005 - 15:40:38 GMT