Another addition to Lifehacker's ever-growing killer interview questions collection: How would you design a phone for deaf people?.
Picture: Getty Images
This question is apparently used at Google. There are several potential angles you could explore. You could point out that this kind of design would benefit from focus group research with actual deaf users, rather than trying to second-guess their needs. You could note that modern smartphones are already very useful for the deaf or hard-of-hearing, since they offer text-based alternatives for communication. In that context, accessorising existing models or adding new software might make more sense than a separate (and potentially more expensive) alternative.
The picture above shows a 1984 system which allowed a deaf person to type a message and have it sent over a conventional phone line as a synthesised voice. That would require a lot less equipment today.
How would you answer the question?