ISO 24503:2011
Ergonomics -- Accessible design -- Tactile dots and bars on consumer products
Product Details
ISO 24503:2011 is applicable to consumer products used by persons with visual disabilities, and in cases where visual information is not the primary sense used for accomplishing the task.
Alternative tactile methods, such as texture and vibration, and other tactile symbols, such as triangles and squares, are not covered in ISO 24503:2011.
Alternative feedback methods, such as in acoustic and visual modalities, are not covered in ISO 24503:2011.