ISE 2015: Fischer&Kerrn Describes and Demos Their Concierge Booking SoftwareFebruary 12, 2015 | Home / February 12, 2015 rave-video / ISE 2015: Fischer&Kerrn Describes and Demos Their Concierge Booking Software ISE 2015: Fischer&Kerrn Describes and Demos Their Concierge Booking Software