Clinical Performance Evaluation of the Hativ P30

Inclusion Criteria: * Male or female aged 18 years or older * Able to provide written informed consent * Able to remain in the same position for an ECG recording for at least 20 minutes using a standard 12-lead ECG recorder and the Hativ P30 device * NSR cohort only: no history of arrhythmia * NSR cohort only: no history of cardiovascular diseases, including but not limited to hypertension, hyperlipidemia, coronary artery disease, heart failure, peripheral artery disease, and stroke * NSR cohort only: being in NSR at the time of screening ECG * Arrhythmia cohort only: documented persistent, permanent, or chronic arrhythmia (AF or flutter, sinus rhythm with APB, sinus rhythm with VPB) * Arrhythmia cohort only: being in arrhythmia (AF or flutter, sinus rhythm with APB, sinus rhythm with VPB) at the time of screening ECG Exclusion Criteria: * Subjects with an implantable pacemaker device, implantable cardioverter-defibrillator device, or internal simulator that would generate internal interference with the recording of the Hativ P30 device or a standard 12-lead ECG recorder * Any medical or cognitive condition that would interfere with the consenting process and study-related procedures as determined by the Investigator * Any known clinical condition (e.g., body tremors, non-healed chest wound, limb absence, etc.) that would preclude appropriate placement of the leads and/or compromise study measurements in the opinion of the Investigator * Poor 12-lead screening ECG quality * Pregnant at the time of enrollment * Participation in other interventional clinical studies that includes active treatment for the last three (3) months (observational studies and long-term follow-up \[no active treatment\] will be allowed) * Screening ECG record resulting in a significant arrhythmia out of the scope of the study, such as Supraventricular Tachycardia, Ventricular Tachycardia, Ventricular Fibrillation, Neurocardiogenic Syncope, among others