Chiu Huang-chuan, a lawyer, says that according to the law governing the use of computers to process data on individuals, when public institutions collect and process information on citizens, they must have written approval from the individual concerned. He thus thinks that there is some question about the legality of the government's putting personal information and fingerprints on a card without the approval of the individual concerned.
律師邱晃泉則認為，依「電腦處理個人資料保護法」規定，公務機關蒐集處理個人資料，必須經當事人書面同意，但是國民卡卻強行將個人身分、指紋等資料納於一卡，有違法之嫌。