They have the added benefit of keeping the users face further away from the heat and smoke produced by combustion in the bowl.
Otherwise the user will face a criminal charge.
Even so, he added, the users of those sophisticated systems faced some familiar problems.
Technologies will evolve and the user will be facing new challenges with each change.
But it is better than the highway congestion that Kennedy's users and employees face now.
According to legend, once the Eye is used, it must be given away, or the user would face bad luck and tragedy.
The lists are to be turned over to the police, and Internet café owners who fail to register users face prison.
Hence, a user very rarely faced silent corruption, so it was not deemed to be a problem that required a solution.
If an owner does emerge, the user must pay "reasonable compensation" or face full liability.
Heavy users will face increases of about 36 percent, she said.