Here are entered works on cards that allow users to make prepaid phone calls. Works on cards that allow users to make phone calls which are subsequently billed to the card owner are entered under Telephone credit cards.
Debit cards -- Government policy -- United States. / https://id.loc.gov/authorities/subjects/sh86000484 https://id.loc.gov/authorities/subjects/sh99005269 https://id.loc.gov/authorities/names/n78095330-781