  Timely treatment of stroke is critical to minimize brain damage. Therefore,
efforts are being made to educate the public on detecting stroke symptoms,
e.g., face, arms, and speech test (FAST). In this position paper, we propose to
perform the arm weakness test using the integrated video tracking from an
iPhone - some general tests to assess the tracking quality and discuss
potential critical points. The test has been performed on 4 stroke patients.
The result is compared with the report of the clinician. Although presenting
some limitations, the system proved to be able to detect arm weakness as a
symptom of stroke. We envisage that introducing a portable body tracking system
in such clinical tests will provide advantages in terms of objectivity,
repeatability, and the possibility to record and compare groups of patients.
