why does smart phone touchscreens works only with human finger but not with any other thing like pen or pencil?
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1
Answer:
Smartphones are too much sensitive
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Answer:
Since your finger is somewhat electrically conductive, touching your finger to the screen changes the current through the digitizer. The reason other objects like a stick doesn't work is because they are not electrically conductive. Capacitive screens must also be glass because no other transparent material conducts as well.
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