How the lack of pay-as-you-go SIMs are thwarting the always-connected PC

The rest of the world has access to pay-as-you-go SIMs. Why is the United States left out?
SIM cards
Karl Baron / Flickr

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As PCWorld's senior editor, Mark focuses on Microsoft news and chip technology, among other beats. He has formerly written for PCMag, BYTE, Slashdot, eWEEK, and ReadWrite.

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