Instructables

Step 4: Conductive Foam

Now that you have your pen ready, take your conductive foam and grab an object with a touch screen. Hold one end of the foam and try using it on the touch-screen. If it's conductive it'll work like your finger. If it works, cut a piece of foam slightly thicker than your pen tube.
 
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Can this scratch the screen?
fruitkid101 (author)  mAd tinker3r3 years ago
Not in the slightest :)