Smart phone era. What is the largest issue for smart phone users, other than wifi? Possibly battery life?
I would love to say that you are lucky to be living in Seoul as it has announced that 5 outdoor recharging stations will be set up along the Cheonggyecheon stream. Drawing current from a collection of hydroelectric turbines embedded in the stream and will be fully charge in 2-3 hours.
If this project became a hit, it will be rolled out nationwide. A rather clever and eco friendly way of utilizing earth’s resources in my opinion, next time, there’s no more low battery excuses.