Weight or volume is also another metric that could possibly be employed, i.e. save the weight and rough volume of each item being scanned...when there's a signi

Weight or volume is also another metric that could possibly be employed, i.e. save the weight and rough volume of each item being scanned...when there's a significant deviation for an product that's shown no or litte deviation in the past, flag it for manual inspection? Probably too costly for such an edge case problem though