MENLO PARK, Calif. (AP) — Consumers' passion for privacy in California and other Western states could signal an uphill battle for the proponents of a national cell phone directory.

Already, slightly more than a third of Americans nationwide have unlisted home numbers, but in California, Nevada, Arizona, Oregon and Washington, about half the people choose not be listed in phone directories. They pay as much as $2.66 a month to keep their home numbers private.

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