Use an established aggregator
PureTrack is the current candidate because it can combine several common phone, instrument, OGN, and satellite sources into one marker per pilot.
Optional feature
Live pilot tracking
A unified, consent-based tracking map is feasible, but it has not yet been authorized or configured.
No map is operating
Live tracking has not been authorized or configured. Pilots must follow the organizer's normal tracking and positive report-back procedure.
Tracking is an aid
What a marker cannot prove
No recent data means stale or unknown, not automatically an emergency.
Automatic landing detection does not confirm that the pilot is safe.
Cellular, OGN, and satellite sources have different gaps and delays.
Every pilot still needs positive report-back after landing.