Electronic Article Surveillance (EAS) Systems are security devices that rely on low frequency, radio frequency and microwave frequency electromagnetic (EM) energy for theft detection in various retail environments. Two concerns that the FDA has about public exposure to this electromagnetic energy are: 1) The possibility of adverse biological effects due to the EM energy ; and 2) The possibility of Electromagnetic Interference with body worn medical devices. In order for the Agency to properly assess these concerns, surveys of four EAS systems at local libraries were conducted. Several electric and magnetic field meters were used to measure the field strength levels around each system. Field strength output from these systems ranged from zero to 6.2 V/m for the electric fields strength and zero to 4.9 Gauss for the magnetic field strengths. These data and future survey data from retail stores, airports and medical facilities will then be used by the Agency to obtain a better understanding of possible device interactions and health risks.