Evaluating Wearable Smart Sensors for Continuous Measurement of Vital Signs in ICU Patients

Inclusion Criteria-ICU Population: * Admitted to one of the four ICUs at Lurie Children's or Prentice Women's Hospital * Under 18 years of age Inclusion Criteria-Non-ICU Population * Under 18 years of age * Willing to visit the Center for Autonomic Medicine in Pediatrics (CAMP) for a one time study visit Exclusion Criteria-ICU Population: * A skin abnormality that would potentially increase the risk of device * 18 years of age or older * Determined by an attending physician or bedside care team to be too unstable (patient) or experiencing too much stress (family) Exclusion Criteria-Non-ICU Population: * A skin abnormality that would potentially increase risk of device use * 18 years of age or older