OTAA or ABP?
OTAA Over-the-Air-Activation (default)
- Most secure
- Dynamic DevAddr
Const: * AppEUI * AppKey
ABP Activation by Personalisation
- Less secure
- Simpler, becouse skip join procedure
Const: * DevADDR * NwkSKey * AppSKey
More info
https://www.thethingsnetwork.org/forum/t/what-is-the-difference-between-otaa-and-abp-devices/2723