Fifteen bathroom design ideas that use smart glass beyond the obvious "partition wall." Some of these are showpiece budgets, some cost less than a good rain shower head. All are pulled from projects we've quoted or referred over the past two years. 1. Frameless ensuite wall The one everyone knows. Full-height smart glass partition between primary bedroom and ensuite. Works best in modern lofts and open-plan builds where a solid wall would kill the light. 2. Curbless walk-in shower with smart-glass door Continues the wet-room look while giving privacy on demand. Pairs beautifully with large-format porcelain flooring and a linear drain. 3. Toilet water-closet privacy Small enclosed WC inside a larger bathroom. Instead of a solid door, a smart-glass door — opaque when in use, clear when open (so guests can see it's a working space and not a closet). 4. Freestanding tub with view-through backdrop Backing wall behind a soaker tub is smart glass onto a private courtyard. Bath with a view during the day, sealed room at night. 5. Vanity mirror with switchable clarity Custom mirror where the top half switches from mirror to clear glass, revealing hidden storage or a display niche. 6. Two-way ensuite for connecting bedrooms Guest bathroom serving two rooms. Smart glass on both doors indicates occupancy — clear = available, opaque = in use. No more knocking. 7. Skylight privacy Overhead…