ADS-B, which consists of two different services, “ADS-B Out” and “ADS-B In,” could replace radar as a primary surveillance method for aircraft control worldwide. In the United States, ADS-B is an integral part of nextGen`s national airspace strategy for modernizing and improving infrastructure and air operations.  Also within the United States, the ADS-B system can provide free graphic information on transportation and state-generated weather data via the TIS-B and FIS-B applications.  ADS-B enhances safety by showing a real-time air traffic control (ATC) aircraft and other ADS-B aircraft equipped accordingly, with position and speed data transmitted every second. ADS-B data can be recorded and downloaded for post-flight analysis. ADS-B also provides the data infrastructure for tracking, planning and shipping inexpensive flights.  Business aviation has long supported efforts to modernize the country`s airspace, including the equipment of automatic satellite surveillance capabilities (ADS-B) for the monitoring of aircraft in the sky and on the ground. The fact that ADS-B removes the anonymity of vfR aircraft operations raises some general concerns in the aviation sector.  ICAO`s 24-bit transponder code, which has been specifically assigned to each aircraft, monitors this aircraft in the operating volumes of the S/ADS-B mode system.
Unlike A/C mode transponders, there is no “1200”/”7000″ code that offers casual anonymity. S/ADS-B Mode identifies the unique aircraft among all in the world, in the same way as a MAC number for an Ethernet card or the international mobile equipment identity (IMEI) of a GSM phone. [Citation required] However, the FAA allows UAT-equipped aircraft to use an automatic ICAO address at random, associated with the use of the Beacon 1200 code. 1090 ES-equipped aircraft with ADS-B do not have this option.  The National FaA Program Office and other international aviation surveillance authorities are addressing concerns about the non-safety of ADS-B transmissions. ADS-B messages can be used to track the location of an aircraft, and it is not possible to ensure that this information is not used inappropriately. In addition, there are concerns about the integrity of ADS-B transmissions. ADS-B messages can be generated by simple, low-cost measures to prevent the location of multiple ghost aircraft in order to disrupt air traffic safety. There are no security measures to ensure integrity, but there are ways to monitor this type of activity.
However, this problem is similar to that of ATCRBS/MSSR, where erroneous signals are also potentially dangerous (uncorrelated secondary tracks). [Citation required] Recently (April 2011) U.S. federal legislation regarding House Bill for FAA Re-Authorization has authorized  an “equipment fund” containing a portion for certain general aviation aircraft.