It is really easy for customers who have difficulty with reading tags or cards in general as it works perfectly without any problems! The interface can be improved but I think that this system has been designed very well so there are no major flaws which would make me dislike using them (as far i know). Try out their demo before buying anything else because they offer free trials too!! They provide great support when you need help installing things properly etc., also if something goes wrong then we get quick responses from our team member about how best could solve those issues immediately after contacting us via chat option provided by keoonnsystems website itself.