  Users of assistive devices vary in their extent of motor impairment, and
hence their physical interaction with control interfaces can differ. There is
the potential for improved utility if control interface actuation is mapped to
assistive device control signals in a manner customized to each user. In this
paper, we present (1) a method for creating a custom interface to assistive
device control mapping based on the design of a user's bias profile, (2) a
procedure and virtual task for gathering interface actuation data from which to
build the bias profile and map, and (3) an evaluation of our method on 6
participants with upper limb motor impairments. Our results show that custom
interface remapping based on user bias profiles shows promise in providing
assistance via an improvement in the reachability of the device control space.
This effect was especially pronounced for individuals who had a more limited
reachable space.
