CardStar
CardStar
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Fails At Basic Function

While the concept of CardStar is great (if you don’t mind a little data mining on your location), the iPhone display is incompatible with most grocery store laser scanners. Do not expect to be able to whisk your iPhone across the self checkout scanner. Smaller hand held scanners and pump scanners can read the bar code, but this will require an additional step during checkout from the cashier. As a general rule, if you see a line or beam from the barcode scanner, it is not compatible with reading from an iPhone display. If you see an area of red light, the scanner should be able to read the CardStar barcode.

Earthsurfer about CardStar

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