The project is based on the Mobile Health Wallet, which allows women to receive and gradually set aside small amounts of money to cover the costs of prenatal care, childbirth, and postnatal care, and to use the funds to pay for health services from CSB healthcare providers and partner referral hospitals, integrated into a digital system. This wallet is accessible via a SIM card that they keep in a key ring, for example. If they do not have a phone, they can use a simple telephone located in health centers or with field agents.