Electronic Skin
Here we are having a simple skin which has the potential to convert pressure into a proportional intensity of light. The whole idea of finding an electronic skin is just to change the feel we have when someone touches our skin
The skin is made up of network of pressure sensors that detect touch and OLED array to emit light upon touch by humans the OLED aray emits the basic colours and the intensity is proportional to the pressure exerted on the sensor

Though a little more work is needed to develop it further and deploy interactive tatoos on the body This innovation is worth a pondering