Why do we see some numbers on our TV screen

YOU MAY SEE THEM SOMETIMES

While watching TV you  may have noticed some of the numbers on your TV screen but may you have wondered what task did these numbers do?

WEll these numbers are used as identity that who is watching TV. Because if you try to record programs and upload them on any public domain you can easily be identified and the person whose program is, can reach to your home, even!

so from today be careful !