electrical conductivity

Touch Screen computing devices like mobile phones, tablets etc are so common these days. Generally we use stylus pen to write on them. What if you don't have it and you want to write on it properly and you are uncomfortable writing with your fingers. Similarly if you want to teach someone using your mobile device and use it as a whiteboard and you don't have the stylus. You can make a very simple stylus pen using what you already have at home.

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