From a technological standpoint, modern guard tour mobile apps leverage a combination of core mobile technologies. GPS provides location tracking, while Near Field Communication (NFC) and Quick Response (QR) codes are commonly used for checkpoint verification due to their cost-effectiveness and ease of deployment. Bluetooth Low Energy (BLE) beacons (iBeacons) offer an alternative for ... https://exigasoftware.com.sg/guard-tour-mobile-app/