Command channel
Documented USB HID, CDC or vendor protocol carries UI, capture and result commands.
PALM TERMINAL ARCHITECTURE
A managed palm terminal for payment and more
The reference terminal supports Palm Vein/Palm Print capture, server-defined UI, two operating modes, multiple network options and centrally governed device lifecycle.
01
HOST / USB mode
The existing POS or PC remains the controller.
Business logic
Amount, merchant, order and workflow remain under the host application.
Use cases
Payment, attendance, access control, identity and custom approved flows.
02
Direct backend mode
The terminal becomes a managed IP endpoint.
OpenAPI control
Backend authorizes business requests and stores system state.
MQTT command plane
MQTT 5.0 over TLS/mTLS delivers UI, commands, events and results.
Fleet operations
Certificates, configuration, logs, firmware, health and alerts are governed centrally.
03
Procurement deliverables
A device is accepted as a system component, not only hardware.
Protocol pack
USB manual, OpenAPI, topic catalogue, error model and sample code.
Security pack
Firmware identity, secure update, device certificate, hardening and vulnerability process.
Test pack
Palm quality, PAD/liveness evidence, performance, endurance and integration test cases.
MOBILE-ID
Contact Mobile-IDPlan a measurable PalmPay PoC
Align the business case, identity path, terminal mode, bank integration, security controls and acceptance metrics with Mobile-ID.