All sources cited in accordance to APA Format

• Blindness Statistics | National Federation of the Blind. (2019, January). National Federation of the Blind. Retrieved May 17, 2022, from https://nfb.org/resources/blindness-statistics
• Digi-Key Electronics. (n.d.). SEN-16977. Digi-Key Electronics. Retrieved May 25, 2022, from https://www.digikey.com/en/products/detail/sparkfun-electronics/SEN-16977/13148772
• Grants & Funding. (n.d.). National Institutes of Health (NIH). Retrieved May 24, 2022, from https://www.nih.gov/grants-funding
• Helen Keller Intl – Continuing Her Work. (2022, May 6). Helen Keller Intl. Retrieved May 24, 2022, from https://www.hki.org/
• Lintech Acess Control Parts. (2017). Millimeter Wave Radar Sensor: 77 GHz Automotive Safety Radar. Lintech Acess Control Parts. Retrieved May 25, 2022, from https://www.lintechtt.com/product/mmwave-radar-sensor/
• Wighton, S. [Stuff Made Here]. (2020, June 20). See in complete darkness with touch [Video]. YouTube. https://www.youtube.com/watch?v=8Au47gnXs0w