A fingerprick isn't just a fingerprick when you have to do it all the time to test your blood sugar levels. Thankfully, the Food and Drug Administration has approved the first continuous glucose monitoring system for adults that doesn't require you to draw blood several times a day. Abbott's FreeStyle Libre Flash Glucose Monitoring System works by inserting a tiny sensor wire below the surface of your skin. The wire needs 12 hours to start up, but once it's ready, you can simply pass a mobile reader over it to read your glucose levels. It even works for 10 days before you have to replace it.