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" ... The use of commercial drones for these tasks, where humans can be safely taken out of the loop, has to be the way forward. So, to open up our skies to the drone economy whilst keeping it safe for manned and unmanned aircraft alike, two things need to happen: First, aviators and drone users need to understand if they are to have a harmonious relationship then they need electronic conspicuity. Despite the prevalence of transponder technology, from iPhone apps to satellite-based ADS-B, today many piloted GA aircraft cannot be seen, or tracked, by air traffic controllers or other interested parties. ... "