there are barcode readers available for CF and SD slot use... the best
source is http://www.yqcomputer.com/
, but their
drivers and software tend to be very good.
While the technology exists to decode bars from a camera image, I am not
aware of any current (purchasable) ppc application that offers this.
Please ask them what software they are using if you spot it again.
Beverly Howard [MS MVP-Mobile Devices]