If one has eingefummelt with the scanner a bit, it gives good results. The mobility of the scanner enjoy. One can just quickly scan what without restarting the computer and can equal him always with you. WiFi connection for Phone / Tablet also works flawlessly. At the computer plugged in, the SD card is immediately recognized as a drive under W8.1. Really bad is the software solution. The scan program requires you, if you want to scan something in connection with the computer. The appearance of the software brings back memories from Windows 3.1-times. The functionality is approaching zero. One can not even adjust the resolution. Simply insufficient. Fortunately, the scanner delivers even alone useful results that can if necessary. can edit with other programs. However, it then lacks the direct control of the result and you have the risk of failed scans, the error LED is not even lit up especially for me to alert me to a faulty scan (so it is at least in the (English) Guide) , This risk, however small, if you figure out how fast you can be. The compactness of the device and the given functionality comfort me about the negative aspects of time. The battery life seems sufficient (50+ scans and still three bars).