WILMINGTON, Del., (CBS) — A new law in Delaware makes it illegal to use electronic smoking devices inside restaurants and other indoor places.

On Tuesday, Governor Jack Markell signed a bill that bans people from using electronic smoking devices, including vape pens and e-cigarettes, at all indoor public places in Delaware.

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The bipartisan measure adds to the state’s Clean Indoor Air Act which prohibits regular smoking at indoor public places.

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“The percentage of teenagers who are using e-cigarettes is dramatically increasing,” said Gov. Markell.

“That’s moving in the wrong direction. And so I think it is really important that we send the signal that this bill sends,” said Gov. Markell.

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The new law takes effect in 90 days.