Reader X Multi-card Authentication
This setup need more than one person presents card on the reader within 10 seconds to open the door. It supports max. 4 persons. It is used only in expert mode.

Multi-card authentication can work with first-card authentication.

displayWhy are there "*" behind property and property is bold type font?
displayWhy is the saved button still forbidden after property changed?
displayWhy property is forbidden or hidden?
displayWhy property value displays multiple value and can not be displayed?