Giada DN72 does not expose serial number in Box or JS SDK due to the player limitation.
Problem
Giada states different serial number on the player label compared to serial number randomly generated inside the Android OS.
Behavior
To limit confusion and possible issues while depending on the self-generated serial number, both Box and JS SDK are not returning any value for serial number.
Workaround
Use the device UID generated by signageOS which signageOS guarantees are always unique for supported devices or generate your own unique identifier and store it locally or via timing config.
Note: MAC address is not a good option either as it's not unique, can be changed, and comes with other shortcomings.