Suppose a parent receives no reply from the child’s device after a number of attempts. Perhaps the device is in a loud environment and cannot be heard, the device has been lost, or is not functioning.
An emergency communication mode should remotely increase the volume to maximum and have the option to send a short but piercing attention siren. It should have an option to remotely open a voice channel to capture at least 20 seconds of ambient sound in order for the parent to hear what is happening around the device.
Feedback to the app should indicate whether the remote commands have been received and executed or not.
For privacy, a voice prompt could verbally notify the device user that remote listening has been activated and when it has stopped.