Usability of a Novel Cueing Device for Patients With Parkinson's Disease

Inclusion Criteria: * Include patients who suffer from advanced PD. Characteristic symptoms of parkinsonian gait like hypokinetic movements and/or FOG have to be present. * Parkinsonian gait is measured by the following items of the Movement Disorder Society Unified Parkinson Disease Rating Scale (MDS-UPDRS): item 2.12, item 2.13, item 3.10 and item 3.11. The Hoehn and Yahr (HY) stage during ON is 1-4/5. * MoCA ≥ 22/30. * Participant has signed the informed consent. Exclusion Criteria: * Inability of the participant to understand the IC or to follow the procedures of the study (as judged by the Qualified Physician). * Significantly, impaired cognitive skills render the participant unable to use the TCD. * Presence of severe motor fluctuations and severely impaired walking ability as defined by HY stage V during ON. * Clinically relevant skin lesions on the wrist or fixation points (usually the thighs).