Help Center> IoT Device Access> FAQs> Device Integration> What Are the Differences Between Device ID and Node ID and What Are They Used For?
What Are the Differences Between Device ID and Node ID and What Are They Used For?
A node ID uniquely identifies a physical device and is usually the IMEI or MAC address. It is required when you register a device on the IoT platform.
- NB-IoT devices: The node ID is carried for access authentication when a device connects to the platform.
- Devices integrated with the SDK: When a device is powered on, it gets bound with the platform through the node ID. The device ID and secret are returned after the binding. When the bound device logs in to the platform again, the device ID and secret are used for access authentication.
- Native MQTT devices: A device uses the secret and device ID or node ID to connect to the platform. The access authentication is the one-device-one-secret mode.
For details, see Device Authentication.
Parent topic: Device Integration
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