To make something sensory friendly one typically adjusts the auditory, visual and olfactory stimulation to levels acceptable for the population that will be experiencing it. Since individuals with ASD do have difficulties with self-regulation and adjusting to sensory stimuli, it makes sense to begin here. However, such environmental changes alone do not make something autism friendly.  Since the primary difficulties facing people with ASD concern language, social skills and repetitive/rigid behaviors, making something autism friendly also requires the introduction of visual supports to make the environment more predictable and address challenges with transitions, as well as tools to address difficulties with social interaction and perspective taking.