Fundamentally, Capture and Validate systems are dependent on the availability of a verifiable identity scheme (a digital government registry holding the identity data of its citizens), and the ability of individuals to access the government-recognised identity documents that meet registration requirements. Where identification systems are not robust or where national identity coverage is low, there is a risk that Capture and Validate policies will exclude large sections of the population from accessing mobile services in their own name – often those who are most vulnerable or geographically remote.