Touch Sensor indicating tapping, tickling and more

Hi, I am new in this forum and with ardunino as well. Please bear with me, if I ask stupid questions...

To the topic: At the moment, I am working on a project, which will help children and handicaped kids.

For the project I need to find a way, to distinguish the following forms of touch: holding, stroking, tapping, tickling and kneading. So for example: I hold someones hand with one of my hands. And with my other hand I hold, tapp, tick etc. on the skin of my counterpart. How can I read out these different forms of touch with a touch sensor so that I can administer them in Ardunino?

I tried it already with bodyresistance, but I cant find a way to distinguish between these signals?

Any Ideas are very welcome.

Thank you in advance...

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