This is the easiest, fastest and most accurate way to check your baby's temperature. I've used this with all 4 of my kids and it is far superior to those ear thermometers. You get a reading in just a couple of seconds, and its short so there's no way you can mess it up. Just stick it in their bum and you're done! I am also an ER nurse, and this is how we check all babies temperatures in the hospital.