The provision requiring the truncation of card numbers is found in section 605(g) of the Fair Credit Reporting Act. It only applies to electronic machines, not to "knuckle-busters." There's nothing in there that requires replacement of the manual machines. However, Visa and/or MasterCard might have such a requirement.
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John S. Burnett
BankersOnline.com
Fighting for Compliance since 1976
Bankers' Threads User #8