We had a great year for esp-rfid since this HackADay project page created, there is now an open-source hardware to solve almost every access control problem out there also the Web UI is completely refactored for touch screens and better User Experience, you do not need to be a tech savvy to configure it.
Since day 1 the esp-rfid is a complete stand-alone access control solution, no need additional devices or services to work, even an Internet connection is not mandatory.
Give it a try and tell what you think about it.
Kind regards. ÖŞB