Is the Friday Prayer valid if the worshipper neither sees nor hears the Imam except via camera, microphone, and television, while being in a house separate from the mosque? And what prevents everyone from praying it in their homes along with any channel that broadcasts it?

The different scholarly opinions regarding the conditions for the validity of following an Imam, both inside and outside the mosque, have been previously explained. Following the Imam inside the mosque is absolutely valid if one hears the takbir, whether one sees the Imam or not, or whether there is a barrier between them or not. As for outside the mosque, it is a condition to hear the takbir and to see the Imam or those praying behind him, and the connection of rows is not a condition unless there is a road between them. It is not permissible to follow the prayer via radio or satellite channels.