> ADS-B is definitely more popular than AIS, and I've always wondered why. Perhaps it's that airplanes evoke more wonder, and is more accessible over land than

> ADS-B is definitely more popular than AIS, and I've always wondered why. Perhaps it's that airplanes evoke more wonder, and is more accessible over land than poor old ships? Having worked on product applications for both I'd say: - There's a lot more B2B and especially B2C/B2B2C commercial use cases for ADS-B data, because flights are more time sensitive and more likely to carry passengers and commercial partners align schedules to the minute rather than to the day! - The aviation enthusiast community is that bit nerdier and more timetable and "what did I just spot?" driven and can play with receivers even when not near the coast, so the crowdsourced ADS-B model works well. - AIS is shorter range and has more issues with spoofing, data gaps etc (the commercial providers can clean it up but it's a bit more of a challenge for hobbyists)