Modular Payment Hardware

The Umbra Terminal

While UmbraPayOS runs natively on smartphones, it also supports a range of hardware modules and accessories — such as the Umbra Terminal, a compact NFC-enabled payment device designed for real-world deployment.

Features of the Umbra Terminal include:

• Secure NFC interface compatible with all ZK-NFC wallets

• Local x402 caching and proof validation

• Solar-powered or battery operation

• Optional Bluetooth connectivity for mobile relay

Merchants, vending machines, or even autonomous delivery robots can integrate UmbraPayOS through this hardware, turning any physical object into a decentralized payment node.

For mobile merchants, the Umbra Terminal offers the simplicity of tap-to-pay combined with the strength of cryptographic validation — no banks, no fees, no surveillance.