High blood pressure is one of the most common conditions seen in office practice. Depending on the definition (140/80 mm Hg or 130/80 mm Hg), at least 72.2 to 103.3 million US adults have hypertension.1 Measurement of high blood pressure is among the very first clinical skills taught to medical students and other health professional students. Measurement is available in pharmacies, grocery stores, gyms, airports, and hair salons. New devices are being developed and widely marketed to encourage more frequent measurement, especially outside of the medical office.