Section 6.7 - Product design, development, and evaluation(a) Manufacturers and service providers shall evaluate the accessibility, usability, and compatibility of equipment and services covered by this part and shall incorporate such evaluation throughout product design, development, and fabrication, as early and consistently as possible. Manufacturers and service providers shall identify barriers to accessibility and usability as part of such a product design and development process.(b) In developing such a process, manufacturers and service providers shall consider the following factors, as the manufacturer deems appropriate:(1) Where market research is undertaken, including individuals with disabilities in target populations of such research;(2) Where product design, testing, pilot demonstrations, and product trials are conducted, including individuals with disabilities in such activities;(3) Working cooperatively with appropriate disability-related organizations; and(4) Making reasonable efforts to validate any unproven access solutions through testing with individuals with disabilities or with appropriate disability-related organizations that have established expertise with individuals with disabilities.