CTTB IT registers devices by their physical addresses (also called MAC addresses), which uniquely identifies the Ethernet port, wireless interface, or a USB/lightning Ethernet adapter.
It's a string of hexadecimal numbers, such as 10:34:56:78:92:cf or 58-76-90-ab-cd-ef.
To find it:
1. On Windows, hit Window+X key, choose to open a PowerShell or command prompt window, type
"getmac /v /fo list"
2. On an iPhone, iPad, or Apple Watch, tap Settings -> General -> About -> Wi-fi Address. Please see Find MAC address on my iOS device (https://utk.teamdynamix.com/TDClient/2277/OIT-Portal/KB/ArticleDet?ID=113601
) for step-by-step instructions with screenshots.
3. On a MacBook laptop, go to System Preferences -> Network -> Select wi-fi or Ethernet in the left panel -> click "Advanced" on the bottom (If your device such as a laptop has both wi-fi and an Ethernet port, and you want to use both wireless and wired access, you need to register both, since each of the two has its own MAC address.)
a. for wi-fi, click the "Wi-Fi" tab and find the "Wi-Fi Address" at the bottom;
b. for Ethernet, click the "Hardware" tab and find the "MAC Address" on the top.
4. On an Android phone/tablet, turn on wi-fi, then tap Settings -> About phone -> Wi-Fi MAC address.
More info with screenshots can be found at this Carleton University's IT page (https://carleton.ca/its/help-centre/how-to-find-your-mac-address/
).Note (PLEASE READ):