Given the different operational systems and resources in each area some local authorities launched and began delivery of the national ID card ahead of others.
O ystyried y systemau gweithredu a'r adnoddau gwahanol ym mhob ardal, lansiodd rhai awdurdodau lleol y cerdyn adnabod cenedlaethol a dechreuodd ei ddosbarthu cyn awdurdodau eraill.