finger position capacitive sensing

[eynasantiago]

Does anyone know the technology/logic/concept behind determining the finger position using capacitive sensing?

example you have a touch pad, how will i know the position of the finger on the pad, or which part of the pad was touched?

thank you.

 

[nandhu015]

Change in capacitance is the thing behind it

Search with google you can find alot

Nandhu

 

[eynasantiago]

how about the layout of the touch pad.
is it like a single pad? of a multi-button pad arranged in matrix form?

thank you.