http://www.slate.com/articles/technology/future_tense/2015/10/tech_companies_should_care_more_about_customers_with_disabilities.html

It had started as just another call to tech support. Sina Bahram, a Ph.D. student in computer science at North Carolina University, had been trying to convince the Lenovo customer service representative to send out an on-site repair person to fix the broken audio on his laptop, but the representative was arguing that the company was no longer doing on-site repairs. Instead, he asked Bahram to go through a troubleshooting procedure, beginning with a visual inspection of the audio port. That presented a problem.