Our earliest prints of data matrix stickers were known to have issues fading with exposure to heat or sun. Later prints do not have this issue.
In regards to this specific issue, the device’s mobile secret (which is stored on the data matrix) is required to claim the device for security purposes. So you will need physical access to this device in order to claim it.
I recently published some instructions for setting up an Argon without using the mobile app. I haven't done the equivalent for the Boron yet, but you might be able to glean what you need from my Argon tutorial?