+x Tim Dawson - 2/21/2020 10:58:55 AMI think the privacy concerns would be surmountable because people are broadcasting this data specifically for the purpose of other people avoiding them in the air.However, tactical collision avoidance using high-latency and unreliable GSM mobile network data is a non-starter. It might work just occasionally enough to give the pilot a false sense of security, which would be a bad thing.The solution is to properly equip with ADS-B and encourage as many others to do so as possible.