Comparison shopping is as easy as pointing your phone's camera at a product's UPC symbol. Within seconds, Barcode Scanner will return with the name of the product and ask if you want to search for it online or compare prices on Google Shopper.
WIRED Doubles as a QR code reader. Scans almost instantly. Bulk mode lets you scan several barcodes in rapid succession.
TIRED Works only in landscape mode. Has trouble with smaller than normal barcodes.