1. A quality management system for products comprising: a multiplicity of barcoded quality indicators each operative to provide a machine-readable indication of exceedance of at least one threshold by at least one product quality affecting parameter; a barcode indicator reader operative to read said barcoded quality indicators and to provide output indications; and a product type responsive indication interpreter operative to receive said output indications and to provide human sensible, product quality status outputs, said barcoded quality indicators including: a first machine-readable visible state prior to actuation thereof; a second machine-readable visible state, different from said first machine-readable visible state, following actuation thereof and prior to exceedance of said at least one threshold by said at least one product quality affecting parameter; and at least one third machine-readable visible state, different from said first machine-readable visible state and different from said second machine-readable visible state, following actuation thereof and following exceedance of said at least one threshold by said at least one product quality affecting parameter.