Why prick when you can scan? Routine blood glucose testing with lancets, test strips and pain is over. Now you can measure your glucose level as often as you like. Anytime, anywhere. The FreeStyle Libre sensor is easy to attach and can be worn for up to 14 days. Using a simple applicator, the sensor is placed on the back of the upper arm with a fine, flexible, sterile tip that slips just under the skin. The sensor is held in place with a small adhesive sheet. Using the painless 1-second scan, glucose is measured very easily, even through your clothes. The small Libre sensor measures and stores glucose readings automatically - day and night. Discreet, comfortable, waterproof - can even be worn while bathing, showering or swimming.