The Interview Trap
Most candidates start listing features immediately: "It should have Braille buttons and a voice assistant." Stop. You just jumped to a solution without defining the problem.
Designing for accessibility isn't about adding "assistive tech" to a standard product; it's about reimagining the experience so the disability is no longer a barrier.
The Core Framework: CIRCLES Method™
1. Comprehend the Constraints
Ask clarifying questions.
- The Soundbite: "Are we designing this for a residential building, a high-traffic hospital, or a public transit hub? I'll assume a high-traffic office building to focus on the complexity of peak hours."
2. Identify the User Persona
Narrow your focus.
- The Soundbite: "I’ll focus on 'Sam,' a professional who is 100% blind and uses a cane. His main goal is independence and efficiency in a crowded environment."
3. Report the User's Needs (Pain Points)
What makes elevators hard for Sam?
- Discovery: Finding the elevator bank in a lobby.
- Selection: Knowing which elevator has arrived (A, B, or C).
- Orientation: Knowing which floor he is on without constant interruptions.
- Safety: Detecting obstructions in the doorway.
4. Cut Through to Prioritize
Pick the "Big Win."
- The Soundbite: "The biggest friction point is 'Selection and Intent'—knowing which elevator to enter and ensuring it’s the right one. I’ll focus my design here."
5. List Solutions (The "Moonshots")
- Haptic Floor: The floor vibrates differently as you approach the destination.
- Spatial Audio: Each elevator has a unique "sonic signature" (e.g., Elevator A hums in C-major).
- Personalized RFID: The elevator "recognizes" Sam’s phone and pre-selects his floor as he walks in.
Bad AnswerKracd-Level Answer"I'd put Braille on all the buttons.""I would implement a 'Zero-Button' interface using ultra-wideband (UWB) technology to automate floor selection via the user's wearable.""I'd make it talk more.""I would use spatialized audio cues to provide directional guidance, helping the user navigate to the specific elevator door that is opening."
Master Product Sense
A great PM doesn't just build features; they build solutions that feel like magic. To pass the "Sense" round at Google or Airbnb, you need to show you can empathize with users who aren't like you.
Our guides break down the 10 most common design prompts with "Moonshot" ideas already baked in.
- For PMs: Ace your design rounds with the PM Prep Guide.
- For TPMs: Learn to bridge UX needs with hardware constraints with the TPM Prep Kit.
FAQs
Q: Should I worry about the cost?
A: In a design round, focus on the "Ideal State" first. You can mention "Phased Implementation" later to show you understand business reality.
Q: Can I use AI in my design?
A: Yes, but explain the technical why. For example, "Using Computer Vision to detect if a service animal is stuck in the door."
Q: Do I need to draw?
A: If it’s a whiteboard interview, yes. Draw the "User Flow" rather than a pretty picture of an elevator.
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