By utilizing GV-AS ID cards / Key fobs / Patrol tags as movable patrol points, GV-Patrol app allows users to set up and perform patrol tours from Android-based mobile devices. During patrol tours, it is able to take notes and snapshots to be sent to GV-ASManager for detailed patrol records. OS Supported : Android 4.4 or later (NFC required). System supported : GV-ASManager V5.1.0.0 or later (with GV-Patrol dongle license). 1 to 4 ASPatrol controllers connection (32 patrol points).