So i build up the POC ... wrote a small firmware and .... IT WORKS .... well sort of. The circuit, unoptimized, needs around 3-4mA which drains the caps way too fast. However the touch sensors work flawlessly ... the I2C split was not problem and they are pretty much plug and play ..... nice.

I was a bit down BUT i noticed, holding a keycard in between makes my phone to keep the filed up .... and oh boy suddenly we have SO MUCH MORE POWER ... way more power than we need. I even was able to charge a 7F Supercap with no problems .... kinda insane.

Also ... KNOWLEDGE ACQUIRED

So the touch IC work without problem ... thats good so we can play around with the design like crazy. For the Energy harvesting im planning to trick around a bit .... since we need a tag to keep the field up, i will try to implement a 2nd antenna with the same IC i used on the Jolly-Tagger ... i tried it and this one also keeps the field up ..... this is gonna be good