"asked digital measurement firm ComScore -- which uses calls made by Facebook's apps as a proxy for time spent"
How does ComScore go about measuring this? Do they run background processes on devices that can detect network calls by other applications? Do they detect the traffic elsewhere in the network? Both of those seem unlikely, so I'm confused.
How does ComScore go about measuring this? Do they run background processes on devices that can detect network calls by other applications? Do they detect the traffic elsewhere in the network? Both of those seem unlikely, so I'm confused.