Code 128 Barcodes being read wrong in low light

[Mr ChriZ]

We're using Barcode+ on Android which seems great on the whole.  We were using Zxing -but found that Barcode+ did seem faster and more accurate.

One problem we're experiencing is that sometimes in low light the Code 128 barcodes are being misread. 

These barcodes have a check digit.  Is there something I need to do to enforce the check digit check?

How can I ensure the barcodes are read correctly?

Thanks

Chris

[Sean Owen]

Yes, it has a different image processing algorithm that will find boundaries at a sub-pixel level. This can really help dense 1D barcodes.

False positives do happen, and in particular it is easy to misread UPC-E codes in a barcode. Am I right that this is what is happening?

The Code 128 check digit doesn't help in the sense that it's not mis-reading a Code 128 code, but a phantom barcode of another type.