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November 1, 1971 · TAP (YIPL)

TAP No. 6 - Blue Box 2 (Early Model)

TAP No. 6 - Blue Box 2 (Early Model)

Responds to reader questions about Ron Rosenbaum’s Esquire exposé on blue boxing, confirming its technical accuracy (crediting box-builder ‘Al Gilbertson’) while noting some phone numbers were altered to protect sources. Restates YIPL’s goal of becoming a reader-supplied information pool and publishes a table of 1972 credit card billing codes by city. Includes tips on avoiding detection when boxing from pay phones and a gag using a YIPPIE! button pin to reset a rotary dial.

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