After reading about this, I realized that as always, battery tech might become somewhat of an issue for this application. However, nearly all of us have a cellp

After reading about this, I realized that as always, battery tech might become somewhat of an issue for this application. However, nearly all of us have a cellphone that has a wireless charging mechanism; what if we were able to reverse that mechanism, so that something like a pant pocket was able to collect a small amount of energy from this process? Easier still, phones could be manufactured with small copper contacts on the back to do this the old-fashioned way. I realize that phone batteries are quite terrible in many cases, but this could change... or perhaps the process could be optimized to use such an irrelevant amount of energy required to keep the garment charged?