CIIE.CO, the National Payments Corporation of India (NPCI), and the Bill & Melinda Gates Foundation have come together to launch a Grand Challenge to bring innovators from around the world to submit ideas and solutions that can enable feature phone users in India to transact easily and securely. According to a statement, the challenge seeks solutions that are customised for feature phones with simplified self-onboarding of users, enhanced user experience, highest security standards, and automated dispute resolution mechanisms.