Google seems to be able to find associated accounts by seeing if one device is signed in multiple times. Same with Meta.
The court specifically asked for other accounts used by trump on the same device. This SHOULD be as simple as control-F. Twitter almost certainly stores some sort of device identifier that can accomplish this.
> Twitter almost certainly stores some sort of device identifier that can accomplish this.
They definitely do, and use this as part of when they ban a user permanently - all other accounts (i.e. "backup" accounts) that have ever used the device in question get banned as well. Happened way too often in my circles.
The court specifically asked for other accounts used by trump on the same device. This SHOULD be as simple as control-F. Twitter almost certainly stores some sort of device identifier that can accomplish this.