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Seoul activists develop ‘smart balloons’ to send messages deep into North Korea
SEOUL--In the balloon warfare between North Korea and South Korean activists, one Seoul-based group has honed its tech expertise to develop balloons capable of dispersing leaflets and electronic speakers hundreds of kilometers across the border.
Wires, circuit boards, and timers bought from Chinese and South Korean e-commerce websites are used to make devices that control the dispersal of the balloons’ contents. Most balloons contain devices pre-programmed to scatter 1,500 leaflets, 25 at a time, taking into account the hoped-for flight path, wind and other weather conditions. This year, some balloons are carrying speakers attached to small parachutes that blare pre-recorded messages critical of North Korean leader Kim Jong Un.
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