Touchscreen

[noitarud]

Android supplies some useful stats on the touch screen when you enable them on the developer menu.
Can we at least have a log of coordinates? it can track ten fingers (last check). conductive rubber tipped pens (or tape covered foil) can actuate it.

As for ways to interpret (per touch):

• X Y acceleration
  
• X Y speed
  
• trajectory speed
  
• trajectory acceleration
  
• angular diversion
  
• the de-rotation stuff in my "map" thread (cumulative angle, unroll, and it describes the same again after X Y speed being applied to result of unroll)
  

[Jens Noriʇzsɔɥ]

We put it on “the list”… It would certainly help if you could describe a concrete use case, so we are able to reasonably allocate resources for this.

On smartphones, there is certainly a problem with lack of screen real estate: we would need space for the user interface, data input, and data display. There is currently no reliable general way to split the screen accordingly in phyphox, so even on a tablet some fundamental work would likely be required…

[noitarud]

The volume key (device or headset) could switch between activity.
The one-input use case is probably better using the accelerometer unless you have to measure an insect.

[Jens Noriʇzsɔɥ]

Audio feedback might make sense for such experiments, so overloading the volume keys is not optimal.