I'm not sure there's much of a problem to be solved. The customer can already refuse delivery if the packaging is damaged. If the package is fine, but the con

I'm not sure there's much of a problem to be solved. The customer can already refuse delivery if the packaging is damaged. If the package is fine, but the contents are damaged, you can still file a claim and (after going through the inspection process) collect on the insurance. I don't think that having proof of some particular level of shock during shipment would make much of a difference - regardless of shock all that really matters is if there was any damage to the contents and whether they were properly packaged in the first place.