2.2.2 Activation by Personalization (ABP)

The ABP method ties an end-device to a specific network bypassing the join request, join accept procedure. Activating an end-device by personalization means, the device address (DevAddr) and the two unique session keys (NwkSKey and AppSKey) are pre-configured directly into the end-device. The end-device is equipped with the above-required information for participating in a specific LoRaWAN network when started.

The OTAA method is a more preferred method as the keys are not pre-determined and can be regenerated.