Can not understand quite some negative representations. For me, the start worked right away. The menu is well structured and logical. You get the whole (with some technical knowledge) back slightly. The keys are a little getting used to, but now I find the system very well. The optional software I have now. Here one must also first time to incorporate ... but then all is well and logically. Tip: on the net you will find a lot of videos where the system and the software is well explained (Youtoube) The system works for a week now, with both fingerprint, access code and e-Key without any errors. I am enthusiastic !!! Note: unfortunately lacks an acoustic acknowledgment when opening (or entered incorrectly). For visually impaired persons, the signature is sufficient on the screen just is not. A short beep that you can open the lock ..., respectively. 3 short beeps that you should try again (Error). Thus the system would be really perfect ...