A method (200) of commissioning a wireless field device (50) is provided. The method (200) includes communicatively coupling (202) a handheld field maintenance tool (100) to the wireless field device (50) to obtain a wireless field device identifier (204), A wireless network is selected. Wireless communication is generated between the handheld field maintenance tool (100) and a wireless gateway (20) to automatically obtain a join key (208) for the wireless field device identifier. The join key is written (210) to the wireless field device (50) with the handheld field maintenance tool (100).
