Detecting freezing while walking at home

Inclusion Criteria: For all participants * Voluntary written informed consent of the participant has been obtained prior to any study-related procedures, except the non-recorded pre-screening questions; * At least 18 years of age at the time of signing the Informed Consent Form (ICF); * Person is cognitively able to follow and understand instructions and provide voluntary written informed consent; * Person is able to walk for short distances (± 10 meters) independently, with- or without use of a walking aid; * Person does not live in a temporary or permanent care facility. For participants with PD: * Clinical diagnosis of Parkinson's disease (PD) made by a neurologist according to the Movement Disorders Society guidelines; * Person self-reports to experience daily FOG (for recruitment of freezers only); * Person is willing to temporarily delay the morning anti-Parkinsonian medication during the standardized assessment visit. Exclusion criteria: * Occurrence of any of the following within 3 months prior to informed consent: myocardial infarction, hospitalization for unstable angina, stroke, coronary artery bypass graft (CABG), percutaneous coronary intervention (PCI), implantation of a cardiac resynchronization therapy device (CRTD), active treatment for cancer or other malignant disease, uncontrolled congestive heart disease (NYHA class \>3), acute psychosis or major psychiatric disorders or continued substance abuse, other neurological (than PD) or orthopaedic impairment that significantly impacts on gait; * Participant self-reports daily falls; * Participation in another interventional study, with or without an investigational medicinal product (IMP) or device (IMD)