Eyes-Free Wearable Design: A Watch That Helps Blind Users Live Independently
Company: Google
Role: Product Manager
Category: Product Design & Strategy
Difficulty: medium
Interview Round: Other
Design a smartwatch for people who are blind. Explain whom you would build it for, which problems in their day it would solve, what the first version would include, how someone would use it without seeing it, and how you would measure success.
```hint What the wrist does better than the phone
Picture a blind person's day: commuting with a cane or guide dog, shopping, working, getting home. Look for moments when pulling out a phone and listening to it is hard or unsafe, and ask what a device that is always on the wrist could do instead.
```
### Clarifying Questions
- Are we building a new device from scratch or adapting an existing smartwatch platform, and can it rely on a paired phone for connectivity and computing?
- Does the target include people with low vision who still use magnification and high contrast, or only people with little or no usable sight?
- Which market launches first, and is there a price ceiling or a funding route such as insurance or public assistive-technology programs?
- Is success judged by hardware sales, by reach among blind users, or by a mission goal such as independence?
### What a Strong Answer Covers
- A clear goal and a segmentation of blind users (age and onset of blindness, remaining vision, mobility aid, comfort with technology), with a justified focus.
- Pain points where a wrist device has a real advantage over a phone, cane or guide dog, rather than features any smartwatch already has.
- An interaction model that needs no sight at any point, setup included: haptics, audio, voice and physical controls, with privacy for spoken output.
- A prioritized first version with its trade-offs (phone versus on-watch processing, battery, cost, camera or no camera).
- Success metrics centered on independence and safety, with guardrails and risks such as wrong guidance and over-reliance on the device.
### Follow-up Questions
- Navigation guidance that is wrong can put a blind user in danger. How would the product and its metrics account for that?
- Your most valuable feature needs a camera. Would you put one on the watch, use the phone's camera, or pair with another wearable, and why?
- How would you price and distribute the watch so that the people who need it most can afford it?
Overview: A product design interview question that asks for a smartwatch built for blind users. It tests how you segment blind users, find daily problems such as navigation where a wrist device helps, design eyes-free interaction with haptics and voice, prioritize a first version, and measure independence and safety.