Project VOICE: Vascular Outcomes Improvement Through Collection of PatiEnt Reported Data

During the VOICE (intervention) phase, participants will use the digital health platform plus Fitbit walking activity tracking for a total of five weeks (one week run-in phase plus four week study phase)

During usual care, patients will self-report on a daily basis if they met the walking exercise goal consistent with instructions from their clinician. Self-report will be recorded as a daily categorical (yes/no) variable.