IDEATION · CONCEPT SELECTION

From two-way communication to a street-ready system

We translated the central goal—mutual understanding between customers and vendors—into two possible design directions.

Customer
Two-way communication
→←
notice · express · confirm · respond
Vendor
01

Comparison & selection

Two concepts, evaluated for the real night-market context

Concept A

Smart Translation Glasses

Speech-to-text captions displayed on the lenses.

Strength
Fast, private clarification in one-to-one conversations.
Constraint
High cost, possible social awkwardness, and reduced reliability in noisy markets.
Best fit
Quiet indoor pilots or specific communication cases.
Selected direction
Concept B

Interactive Apron Device

Sound detection + haptic alert + pictogram display + large confirmation control.

Strength
Hands-busy friendly, visible to customers, and supports an immediate two-way flow.
Constraint
Requires simple onboarding and clear stall signage.
Best fit
Active street markets and everyday vendor–customer exchanges.
02

Expanding the intervention

From a point solution to an inclusive service system

POINT SOLUTION

Improve communication at one stall

The apron supports attention alerts, order confirmation, and price display.

  • Expected: shorter ordering time
  • Expected: fewer communication errors
Limitation: impact remains concentrated at a single stall.
SOLUTION + EDUCATION

Build a more inclusive stall experience

Add sign-language prompts, a pictogram menu, and inclusive stall signage.

  • Expected: easier first-time interaction
  • Expected: more returning customers
  • Expected: greater public awareness
Value: easier to scale across vendors while supporting income stability and dignity.
CONCLUSION

After considering feasibility, communication quality, and operating efficiency, we selected the Interactive Apron Device. It is better suited to real street-market conditions and creates a clearer path toward mutual interaction between vendors and customers.