If weight on the screen often breaks the force touch sensors without breaking the screen, that's an ugly UI problem. Even with a low "force touch / no screen" accident rate (< 1%), there could easily be tens or hundreds of thousands of users walking around with broken force touch sensors that have no idea their phone has a problem - because there's no visible signal that anything's wrong. They'll just think force touch is broken and/or unreliable. That's no way to promote the adoption of a new feature.
> might be handy to have a scale in my pocket sometimes.
I would kill for that. I diet in a geeky way, weighing everything. I have often thought that some kind of foldable scale that fit in my shirt pocket would be nice.
