The specific objective of this study is to validate the practice of remote pulmonary function testing (rPFT) conducted in the home through the use of connected mobile health devices and the Penn State Hershey ALS Telemanagement program. The central hypothesis is that guided home assessment of respiratory function is a valid method for detecting respiratory insufficiency leading to noninvasive ventilation (NIV) recommendation. This study has the potential to transform the current practice of conducting breathing assessments every three months, resulting in timelier detection of respiratory insufficiency, thereby staining quality of life and lengthening survival. This protocol has the potential to demonstrate telemanagement exceeding the standards of ALS care.