A method of identifying non-conforming groups of items within a package, the
package
containing a plurality of groups of items, comprises obtaining a reference signal
corresponding to a package containing conforming groups of items, obtaining a signal
corresponding to each of the plurality of groups of items in the package, comparing
the signal corresponding to each of the plurality of groups of items with the reference
signal, determining whether any of the plurality of groups of items is nonconforming,
and segregating the package based on whether the package contains a nonconforming
group of items.
