Meet the ThermGo: a portable non-contact infrared thermometer designed to work with your favorite smartphone. It plugs into your mobile device and doesn’t require a separate battery. It gives you instant readings and lets you track everything on your devices. Its sensors have an accuracy of ±0.1°C.
ThermGo is compatible with iOS and Android devices. Its companion app lets you see temperature history and trends to monitor changes. You can use this device to measure indoor and surface temperatures too. It has a reading range of 2-5cm.[where to get it]