Numo has introduced a free, open-source tap-to-pay application designed to allow merchants to accept Bitcoin payments through NFC technology without requiring additional hardware. According to NS3.AI, the app supports both Cashu ecash and Lightning Network payments, providing users and merchants with enhanced privacy and flexibility. Numo's app includes features such as automatic fund withdrawals, inventory management, and the absence of platform fees, positioning it as an efficient and cost-effective alternative to conventional payment methods.