Using Fingertip: prick your finger with a small needle and put a drop of blood on a test strip. Use sugar meter with this strip it reads the blood sugar level. Sugar meter returns the result with in 15 second.store the readings and compare it with next time reading and see the difference in sugar level.Finger Blood Sugar Test Prank is enables you to efficiently track all you need to control your current blood sugars. Keeping in mind to study your own blood sugar is frequently an issue.Meters That Test Other Sites: Newer meters let you test sites other than your fingertip, such as your upper arm, forearm, base of the thumb, and thigh. You may get different results than from your fingertip. Blood sugar levels in the fingertips show changes more quickly than those in other testing sites. This is especially true when your blood sugar is rapidly changing, like after a meal or after exercise. If you are checking your sugar when you have symptoms of hypoglycemia, you should use your fingertip if possible, because these readings will be more accurate.Disclaimer > Blood Sugar Scanner Prank is only for fun and entertainment purposes and a prank application > And no real "Blood Sugar" will Disply from your device.