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Natoli was charged with trafficking in stolen access devices used to program cellular telephones ; Al Bradford , of Detroit , Michigan , who used the computer alias of " Cellfone , " was charged with trafficking in unauthorized access devices used to program cellular telephones ; Michael Clarkson , of Brooklyn , New York , who used the computer alias of " Barcode , " was charged with possessing and trafficking in hardware used to obtain unauthorized access to telecommunications services .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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