Why do they (LG and Samsung) not fingerprint things streamed from a phone, but do fingerprint anything coming over HDMI? And why do they fingerprint their own FAST services, don't they know what they showed already?
"We find that: (1) ACR network traffic exists when watching linear TV and when using smart TV as an external display using HDMI"
> Netflix prefers to have ACR deactivated during its streaming “in order to preserve the integrity of its subscribers viewing experiences and maintain sole control over measurement of its viewership” (Verance, 2020). The same reasoning applies to FAST channels, which LG and Samsung consider to be ”aggregator apps” (Wolk, 2023), where providers may have agreements restricting ACR usage.
In other words, FAST comes from other providers, who may complain. Random content over HDMI doesn't. However, this doesn't explain why they ignore video streamed from phones (tablets, laptops, etc) wirelessly.