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30 ON THE BUTTONSeamless indoor-outdoor urban navigation system enables accurate horizontal and vertical positioning for smartphone users, as well as for smart city devicesA Wall Street Journal columnist argues that satellite navigation systems are taking the fun out of road travel because we no longer get lost1. Yet, most people are apparently happy with not taking an unnecessary detour on the way to their destination. In a survey conducted in the US, 93% of respondents said they relied on GPS to get around2. But in densely built-up areas like Central or Mongkok, the accuracy of GPS may be off by more than 100 metres as satellite signals are blocked or bounce off tall buildings. You could end up a whole block from your intended destination.On the button1 Cohen, Rich. %u201cWhat I Learned Getting Lost on America%u2019s Backroads.%u201d The Wall Street Journal. 27 July 2024. Retrieved from https://www.wsj.com/lifestyle/what-i-learned-getting-lost-on-americas-backroads-cefb5886 on 15 September 2024.2 %u201cStudy Reveals Where Drivers Are Most Reliant on Their GPS.%u201d United Tires Library. Last updated on 8 August 2024. Retrieved from https://www.utires.com/articles/where-drivers-need-gps-the-most/ on 15 September 2024.