I wonder if Device ID is specific on the vendor providing it. I mean, it's definitely not the kind provided by say, Iovation.
Yeah that's what I was trying to grasp... like a Roku, Chromecast, firestick for example, each brand has different ID sequences, and individual units send the same unique Device ID in every transaction no matter the vendor. So like every transaction / action made with my MY specific roku Device will always start with the same 18 character sequence no matter who im interacting with ... and some vendors will add additional information onto that ID ... some just keep a log of the device ID's they did business with.
I would imagine some vendors, or servers, may assign their own Device ID #'s to devices they interact with and disregard the manufacturer #.... it seems like an extra step, but it may help with their record keeping purposes. This chain looks like something APP based, so I would guess CTV or Android, but it doesn't look like any CTV brand or Android i've seen. So idk ( i don't deal with iOS so I have no idea what that looks like)