No public utility shall require an applicant for any product or commodity furnished by the public utility or service rendered by the public utility to disclose more than four (4) digits of the applicant's social security number prior to obtaining such product, commodity, or service. Provided, however, in the event the public utility uses an applicant's full social security number for a credit check, such full social security number shall be deleted from the public utility's records within ten (10) days of the credit check.
Idaho Code § 61-301A