Virtually any tile in a matte finish will be non slip, especially smaller size tiles when further aided by the grout lines. The floor is easy to heat as well. It's the same matte tile/grout/size of tile principal used on a shower floor.

Slipping, tripping and "falling" are actually different things.... bath falls among seniors usually result from fragile bones/ broken hips followed by "the fall", or a shuffling gait and subsequent trip over a rug, or poor vision and not seeing a potential hazard such as a shower curb or some other obstacle on the floor. A step out mat only at the shower/tub exit is wise. Scatter/accent rugs have caused more falls no matter where they are placed, which is why they are strongly discouraged, and even banned in many senior living facilities.