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If you have a laptop, the MAC address can be specified on the sticker on the bottom of the computer. First of all, you can see it on the network card package. There are several ways to lookup the MAC address. How do you find the MAC address on macOS? For example, the “Renew London” company used trash bins in the city of London to track the movement of people in the city based on their MAC addresses. When you walk down the street, smartphone scan nearby Wifi networks and transmit its MAC address. Device Tracking: Because the MAC ID is a unique number, it can be used for tracking.For example, the airport’s Wi-Fi network can provide a maximum of 30 minutes of the Internet for free, and then it prohibits a specific MAC address from accessing Wifi. Device identification: Many Wi-Fi networks at the airport and other public Wi-Fi hotspots use the MAC address of the device to identify it.MAC address filtering: networks can use MAC address filters, allowing only devices with specific MAC addresses to connect to the network. ![]() When a device is connected, it always receives a specific IP address if it has a corresponding MAC address.
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