Have you ever wonder why this number and alphabets appears on the screen while watching T.V

Have you ever wonder why this number and alphabets appears on the screen while watching T.V

The  answer will surely blow your mind,and you will admire the beauty of Technology now a days

The numbers and alphabets are called "Privacy checks"-They acts as an anti-privacy measure.The numbers and alphabets are generated on basis random algorithms.If someone tries to record the show and publish internet can be tracked through these numbers and alphabets.

This type of things come under Digital watermarking which  take care of Copyright policies and insures the privacy of the company.

So,Next time when you see this type of number and alphabets  in your television ||Beware.And Don;t record the show,its illegal.

Source -Quora -Piyush Sahu