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Exception : Carrier is not responsible for money , jewelry , eyewear , keys , medication , cameras , video and electronic equipment ( including computers ) , silverware , precious gems and metals , negotiable papers , securities , business documents , samples , works of art , antiques , collectors ' items , artifacts , manuscripts , furs , irreplaceable books or publications , and similar valuables contained in checked or unchecked baggage . Some components producers have already begun developing safer alternatives by altering their circuit boards to use lead-free formulations such as tin-silver , and Hewlett-Packard , Electrolux , Samsung , Sony , LG Electronics , Nokia and Motorola have been vocal in their preference of integrating extended producer responsibility ( EPR ) into the European Commission 's Waste Electrical and Electronic Equipment ( WEEE ) Directive .