Zero UI: How to Design an Invisible Interface

The best design is the one you don’t see. Zero UI (Zero User Interface) means interacting with a device naturally — by speaking, gesturing, or even thinking (Neuralink?). If your customer asks Alexa “best plumber in Tallinn,” will it find you?

Voice search optimization (VSO)

Voice search is different from typed search.

Typed: “plumber tallinn price” (keyword‑based)
Voice: “Hey Google, how much does a plumber callout cost in Tallinn?” (conversational, question‑based)

Your website content must answer these long questions (long‑tail keywords).

Structured data (Schema.org)

AI doesn’t read your page like a human. It reads code. JSON‑LD is the language search engines understand. If you mark up your opening hours, prices and location according to Schema.org, you increase the chance that Siri reads your answer aloud.

Position zero (Featured Snippet):

In voice search there is only one winner. “The winner takes it all.” If you’re in Google’s Featured Snippet box, you are the answer.

FAQ: Future interfaces

Do I need to rebuild my website? +

No, but you need to adapt content. Add an FAQ section that answers “How,” “What” and “Why” questions in simple language.

What is ambient computing? +

It’s computing power that’s always in the background (smart home, smartwatch, car). It requires an API‑first approach where your services are accessible from any device.