Asking the Pilots / Aircraft owners on this forum on what they think.
Should ADS-B Transponder Data be Encrypted ?
ADS-B lacks encryption necessary to keep those communications private (Aircraft Registration, Location and other stuff).
The development of an encrypted ADS-B based security identification system for small aircraft appears very promising and should be quickly pursued, including conducting field tests and developing standards for airborne small aircraft identification procedures.
http://www.icas.org/ICAS_ARCHIVE/ICA...PAPERS/805.PDF (PDF FILE)
The ability to encrypt ADS-B message transactions would afford protection to ensure that the confidentiality of aircraft data is not compromised.
http://dl.acm.org/citation.cfm?id=24...reflayout=flat
From CEO Mike of Flightradar24.com
" The people deciding this does not care what you see or think. There are strong forces who want to encrypt ADS-B data and even if it will not happen 2013, 2014 or 2015, we don't want to be the accelerator behind this decision. "
http://www.airlinepilotforums.com/ha...ml#post1493978
" In my private opinion FR24 should work with authorities, and not against them."
http://forum.flightradar24.com/threa...locked-flights
From FAA.gov
Will the information broadcast by ADS-B Out be encrypted for security purposes?
ADS-B data can be received by any aircraft, vehicle, or ground station equipped to receive ADS-B. No specific encryption is specified.
http://www.faa.gov/nextgen/implement...s/adsb/faq/#31
ADS-B encryption issues
http://www.nnsquad.org/archives/nnsquad/msg04339.html
Post from 2010 - ADS-B a terrorist tool?
http://www.pilotsofamerica.com/forum...ad.php?t=38211
http://www.airsport-corp.com/adsb2.htm