User testing · Night market用户测试 · 夜市场景

Testing where communication actually happens.在真实交流发生的地方测试原型。

Field observations reveal a shared goal: make every interaction faster to understand, easier to trust, and lighter to wear.现场观察指向同一个目标：让每次交流更快被理解、更值得信任，也让设备更轻松地融入工作。

Customer + vendor顾客 + 摊贩 In-context evaluation真实场景评估

A participant viewing food at an EchoApron night-market test — 01 · Live interaction01 · 现场互动

A customer speaking with a vendor during the EchoApron field test — 02 · Customer view02 · 顾客视角

Vendor wearing an EchoApron display showing a waiting state — 03 · Waiting state03 · 等待状态

Vendor apron display showing the total price — 04 · Price message04 · 价格信息

A customer observing a night-market food stall during testing — 05 · Customer observation05 · 顾客观察

Vendor apron display presenting taste feedback options — 06 · Taste feedback06 · 口味反馈

Vendor apron display showing a welcome greeting — 07 · Welcome greeting07 · 欢迎问候

Research frame研究框架

Two perspectives. One communication loop.双重视角，同一条沟通链路。

We evaluated comprehension, response speed, attention cues, and wearability—not just whether the prototype worked.评估不只关注原型能否运行，也关注信息理解、响应速度、注意力提示与穿戴体验。

Customer experience顾客体验

See · understand · respond看见 · 理解 · 回应

Is it easier to communicate with vendors?与摊贩沟通是否更容易？

Is the screen clear and easy to understand?屏幕信息是否清晰易懂？

Must new sign language be learned and memorized?是否需要学习并记忆新的手势？

Visibility可视性

“The text is too small or too dark in poor light. I need to get close to read it.”“光线不好时，文字太小、颜色太暗，必须走近才能看清。”

Responsiveness响应速度

“The information on the screen is sometimes slow to update.”“屏幕信息有时更新得很慢。”

Learning burden学习负担

“I want to get the food and go—not learn sign language. The gestures are hard to remember quickly.”“我只想拿到食物回家，不想先学手语；短时间内也很难记住所有手势。”

Vendor experience摊贩体验

Notice · identify · serve感知 · 判断 · 服务

Is it easier to locate sound and communicate?是否更容易识别声源并与顾客沟通？

Does it support more effective customer service?是否能更有效地服务顾客？

Is the apron comfortable for a full shift?围裙能否舒适地穿戴整个班次？

Attention detection注意力识别

“Vibration sensors miss the source; ambient sound makes it hard to know which customer needs me.”“振动传感器有时找不准声源，环境声也让我分不清哪个顾客在叫我。”

Shared understanding共同理解

“Customers cannot always understand the sign display, and content updates slowly.”“顾客不一定看得懂手势显示，内容更新也偏慢。”

Wearability穿戴体验

“The material feels thick and hot all day. The fit is too large and uncomfortable.”“材质偏厚，穿一天很热；尺寸太大，使用起来不舒服。”

Design response设计回应

Turn friction into priorities.把使用摩擦转化为迭代重点。

The next iteration should remove effort from both sides of the counter.下一轮迭代要同时减轻柜台两侧的认知与使用负担。

Lower the learning threshold降低学习门槛

Use familiar pictograms and direct prompts; require no gesture memorization.采用熟悉图形与直接提示，不要求顾客记忆手势。

Make information reliable提升信息可靠性

Increase type size and contrast; keep screen updates fast and consistent.放大文字、提高对比度，并确保信息快速且一致地更新。

Make interaction feel natural让互动更自然

Support the quick purchase flow and reduce the mechanical feeling.顺应快速购买流程，减少机械化的互动感受。

Improve comfort and fit改善舒适度与合身性

Use lighter, breathable materials with adjustable sizing.使用更轻、更透气的材料，并加入可调节尺寸。

Reduce equipment load减轻设备负担

Make hardware modular and detachable; improve placement flexibility.让硬件模块化、可拆卸，并提升安装位置的灵活性。

Simplify care and repair简化清洁与维护

Separate electronics from a washable shell and simplify component access.将电子部件与可清洗外层分离，并简化组件检修。

Core principle:核心原则： the technology should disappear into the service—not become another task.让技术自然融入服务，而不是制造新的任务。