The present invention relates to a method and a system for the configuration of small locking systems with electronic locks, preferably electronic locking cylinders, which can preferably communicate with passive RFID cards. In one embodiment, a medical device evaluates two or more different physiological signals, such as phonocardiogram signals, electrocardiogram signals, patient impedance signals, piezoelectric signals, and accelerometer signals for features indicative of the presence of a cardiac pulse. The retention device receives and surrounds a fastener. The light emitting layer contains an adhesive material, and a second scintillator material added thereto for detecting \u03b1 ray. The pilot circuit is configured for supplying a control pilot voltage. Calculated differential corrections are then broadcast to vehicles in the local area using a radio transmitter.