The intent of 210.70(A)(1) isn't necessarily to have a switch at every entrance, but to have a switch located near an entrance.Here's a breakdown: "At least one lighting outlet controlled by a listed wall-mounted control device...": This establishes the basic requirement: a light and a switch. "...shall be installed in every habitable room, kitchen, and bathroom": Specifies the types of rooms requiring this. "The wall-mounted control device shall be located near an entrance to the room on a wall.": This is the key part. It requires the switch to be near an entrance.Therefore, with two entrances: Minimum Requirement

You only need a switch near one of the entrances.

Best Practice/Convenience

While the code doesn't explicitly mandate it, having a 3-way switch configuration (where you can control the light from both entrances) is highly desirable and generally considered good practice for convenience.

In conclusion, the minimum* code requirement is met with a single switch near one entrance. However, installing switches at both entrances (via a 3-way switch configuration) greatly enhances usability and is often preferred. Flag for review