Not GP and I have no idea if they meant this, but "smart" vectorization/tracing would be ideal when use of touchscreen pens is impossible (still doesn't capture

Not GP and I have no idea if they meant this, but "smart" vectorization/tracing would be ideal when use of touchscreen pens is impossible (still doesn't capture the angle a pen is being held at, but we are getting close). For the state of the art, look up "image tracing".