Ready in room "lab".
Device 1
Send The Test Click
Tap the large button on this device. The event is timestamped on the server and delivered to device 2.
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Most recent click id
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Round trip is shown on device 2
Device 1
Tap the large button on this device. The event is timestamped on the server and delivered to device 2.
--
Most recent click id
--
Round trip is shown on device 2