Periodically, flashing electronic road signs on Route 72 remind beachgoers headed to Long Beach Island for summer fun in the sun, on the sand and in the sea to put down their phones. On the Island, Ship Bottom doesn’t need flashy signs. Instead it has a squat structure on the 15th Street ocean beach with the necessary tools nestled inside and instructions on the outside to help limit screen time.

“What I love about it is you put your cellphone down and you walk with your kids, you walk with your girlfriend or your…