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Now I kind off know that Capacitive Screens have like capacitors built into them that create an electrostatic field. Now whenever a thing that can carry charge or a conductor touches it distorts the field. Then the processor somehow calculates the location of touch

The thing is when I use a battery and try to use it as a stylus the -ve side does register touches but not the +ve side. Can anyone tell me why this happens? Edit : Got the Answer It was cause there was not good amount of surface in contact.

Is this the same reason that when I connect a wire to the cell and try using it to distort the field but it doesn't sense it?

And how do these rubber tipped stylus work? They are not conductors right?

I know there are many similar questions out there but I didn't find any of them helpful. Any articles or anything will be helpful.

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    \$\begingroup\$ Capacitive touch does not work like you explain, look up on Wikipedia how it works. Your question has a lot of wrong assumptions. Do research first, then ask. \$\endgroup\$
    – Bimpelrekkie
    May 30, 2018 at 6:18
  • \$\begingroup\$ @Bimpelrekkie I updated the Answer. \$\endgroup\$
    – Sagnik Pradhan
    May 30, 2018 at 14:21
  • \$\begingroup\$ You can get conductive rubber. It doesn't have to be a good conductor to work. \$\endgroup\$
    – Simon B
    May 30, 2018 at 15:47

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it doesn't detect the positive side because it it too small, the negative end has a larger area.

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