Panopticons

1) Referring to the video on Prisons, please explain the concept of the Panopticon and refer to at least two examples mentioned in the video. 

https://www.youtube.com/watch?v=EtHEsptxGj0

2) Can you think of Panopticons that you have encountered in real life? Were they architectural or created by technology (ex: internet, cameras, etc.) or both?