This is pretty cool. If you read the article about wearable tattoos and fast charge batteries, check out what researchers are now working on. A bendable battery could make wearable devices much easier to use. Especially for implants.
https://futurism.com/researchers-develop-bendable-batteries-that-could-make-implants-and-wearables-safer/
On a some what related note, check out what this company is doing to…for their employees. Three Square Market (32M) is offering implanted chip technology to all of their employees on August 1st, 2017.
https://www.prlog.org/12653576-three-square-market-microchips-employees-company-wide.html