I predict we will soon see the mainstream integration of renewable energy sources into wearable tech, including solar charging, body heat and motion, and so on. The biggest current drawback to wearable tech is the time we spend charging our devices. Soon, this will no longer be the case; we won’t need to plug in our myriad devices at night, because they will have charged during the day. – Vikas Khorana, Ntooitive Digital