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Short barcodes (10 & 11 digit)
Some manufacturers, especially in the music industry, use a UPC with only
10 or 11 human-readable digits. Technically, these would be invalid. In
reality, there is additional information in the bars and all good barcode
readers, including your Groqit, will read these forms and calculate the
check digit (AKA checksum). This checksum would normally be the 12th digit
and verifies that the code was read correctly. Your Groqit will store the
12-digit code.
When you only see 10 digits, there is a very good chance this product was
manufactured in the United States and the leading zero (USA nation code)
was not printed, just as the checksum was left off. They are probably in
the barcode, so do not be surprised if your Groqit reads a 12-digit code,
when you only see 10.
Obviously, if the manufacturer has left the checksum off, the chances of
an error occurring during a read or manual entry increase greatly.
When keying barcodes in by hand, the site will also try to fix the code.
If you make an error typing a 10 or 11-digit UPC, a checksum
will be calculated. This may result in the wrong iteming being
found. It is extremely important you verify that the item our search engine
finds is correct. If the item is wrong, please take a close look at the
code you entered and correct it if necessary. If you keyed a 10-digit
code, try it again by adding a zero (0) to the front.
An apparent 10-digit UPC:
What it should look like:
Notice that the bars are identical, just the
human-readable part is different.
8 digit barcodes
Some household products will have 8 digit codes. These are either
UPC-E or EAN-8. Your Groqit can read both.
 EAN - 8
 UPC-E
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