NEW YORK (CBSNewYork) -- Enhanced security screenings at Major League Baseball stadiums will take a little longer, but it's for everyone's safety, officials say.
Under the guidance of the Department of Homeland Security, Major League Baseball has stepped up security checks at all 30 stadiums.
Fans will have to pass through metal detectors, WCBS 880's Sean Adams reported.
As Season Opens, MLB Stadiums Step Up Security Screenings
"Unlike the airports, you can leave your belts and shoes on," said Doug Behar, vice president of operations at Yankee Stadium. "We're just asking any heavy metals and keys and phones, just to take them out of your pocket. We'll provide baskets like they do at the airport.
"Laptops aren't allowed in the stadium, and we do not have storage in the facility. So those especially taking mass transportation should really look at the list and make sure they're not bringing anything (prohibited) in."
Selfie sticks, audio and video recorders, hard-shell bags and laser pens are among the items not allowed.
Yankee Stadium had an opportunity to fine-tune the new security measures at recent New York City FC soccer matches.
"We learned a lot the first couple matches because we saw how it went," Behar said. "We made some adjustments ... and got people in a lot quicker the second time out."
The Yankees are asking fans to arrive early because of the enhanced screenings. Gates open 2 1/2 hours before game time.
The Mets opened their season at Washington on Monday afternoon. Their home opener is April 13 against Philadelphia.
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