Interesting concept, but it feels difficult to use. I do think it's a cool demo!
One conceptual issue I noticed with using it is that force touch requires pressure in the opposite direction of how I would understand weight and mass. It feels more like... I'm trying to think of a physical example, trying to force down something with buoyancy. I also expected the weight to affect how fast I needed to drag my finger, but once I exerted enough downward pressure, both heavy and light objects moved the same.
One conceptual issue I noticed with using it is that force touch requires pressure in the opposite direction of how I would understand weight and mass. It feels more like... I'm trying to think of a physical example, trying to force down something with buoyancy. I also expected the weight to affect how fast I needed to drag my finger, but once I exerted enough downward pressure, both heavy and light objects moved the same.