You can force the use of magnetic card identification for Frequent Diners,
and disable manual entries.
To accept cards only, enable the following option:
Accept Swiped Entries Only
Note: If Custom Cards are used for Frequent Diner cards and Account
Receivables cards, the custom card definition has to be setup in the A/R
media type # 49 only, and the Frequent Diner numbers have to include all
digits of the cards, even if some leading characters are the same on all
cards. The employee have to touch the Frequent Diner button and only then
swipe the card.