How can i make "Phone" field to check for duplicate

Danthess
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11 years 11 months ago #213761 by Danthess

How can i make "Phone" field to check for duplicate was created by Danthess

hello,
i have an website, i use CB 1.8.1, i intend to giveaway some prizes in a raffle, on registration i ask for phone number, how can i make this field to be checked in database, to be only one account / phone number?

Thanks in advance.
Have a nice day.

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