Simple scene navigation and some minor tasks are possible with the touchpad, but it's very much required to have 3 button configuration on either a mouse or graphics pen to get things done efficiently in Blender. There is a Portable App version of Blender available out there which should work with a touch screen much easier than the standard package, but I do not know if it has been upgraded to the latest releases. I know the "Blender For Android" app has not been updated since around 2015!

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