Didn't scan our quite small datamatrix. Other barcode apps, for example Barcode Scanner, do scan it, so it's not my phones camera to blame. It does scan it from computer screen, so the data is correct.
Crashes when reading QR and Data Matrix
Checksum It seems to report the lot# with the check character appended, instead of just the lot#. It seems like the checksum should be reported in a separate field.