In a hobby project I am using shielded cable to connect capacitive sensor's electrode (see https://electronics.stackexchange.com/questions/189916/capacitive-touch-not-working-at42qt1011 ) to the AT42QT1011 (there are two cables ending with electrodes going in separate directions). Usage is proximity (millimeters), electrodes are insulated.
However, I left the shield disconnected (using only wires inside) as connecting to ground will make strong capacitive coupling with the ground - something which will render the sensor useless.
The question is, where to connect the shield? It is not particularly annoying that IC senses thru the shield, but what is the right thing to do?
(I have already settled on using particular cable, but may be there are better choices for cabling capsensors?)