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Smarter sim cards cut waste

点击量:   时间:2019-03-03 08:08:02

By Barry Fox Junking a no-longer-trendy cellphone involves throwing away an expensive microprocessor chip – which uses vast quantities of natural resources in its manufacture. Now Philips has a plan to cut this waste (World Patent application 2004/51971). Instead of being soldered into the phone circuit, Philips’s new chip will form part of a larger version of the removable SIM card that already carries each subscriber’s account details. For budget handsets the SIM will contain a basic processor. For more sophisticated devices that perform tasks like web browsing, the SIM will be equipped with a state-of-the-art microprocessor. Either way,