What I find the most interesting is the battery booster idea, there seems to be a mini battery inside the main computer part (to allow hot swapping of the booster), and the booster attach magnetically on the opposite side of the garment to bring the main source of power wirelessly.
I would have loved this idea of battery hot swapping when smartphone used to have very poor battery, and it can makes product more durable because it is extremely simple to change the battery.
This is mostly achieved already thanks to the magnetic wireless charging standard found in many new phones and all the Apple ones. Replaceable internal batteries is still largely unavailable, but at least you can bolster the internal one and the same way as this pin.
