Pointy works by scanning manufacturer-issued product barcodes (also known as the UPC/EAN) and then matching that barcode to product information in our database. As such, it isn't a good match for labels you create yourself.
However, some retailers who produce their own barcode labels still use Pointy. They do this by leaving both labels visible on the product and re-training their staff to scan both the UPC and their own label at the point of purchase.