Magic pen uses ink to conduct electricity so you can literally draw circuits!【Video】 | SoraNews24 -Japan News-
This Incredible Drawing Pen Transmits Electricity On Paper With Its Special Silver Ink
Circuit Scribe: Draw Circuits Instantly by Electroninks Incorporated — Kickstarter
This electric ink pen can draw wire connections | With this electric ink pen, you can draw electronic circuits as easy as you can doodle. | By Quartz | Facebook