From Treadmill Dust to Playful Steps: How Linjing Roaming Reinvents Home Exercise

The Problem: Treadmills Become Coat Racks

Every home fitness device fears the same fate: bought with enthusiasm, used for a week, then relegated to a corner where it collects dust or, worse, becomes an expensive clothes hanger. The team behind Linjing Roaming, a HarmonyOS-based walking machine for the Huawei Vision, saw this pattern clearly. People aren't lazy or unwilling to exercise; they're just bored. The treadmill's endless monotony turns movement into a chore, requiring a mental pep talk every time you step on.

A Different Approach: Step Into the Screen

Instead of slapping a tablet onto a treadmill, Linjing Roaming reimagines the entire experience. You stand on a machine that's more like a gentle glider than a punishing runner, with speeds ranging from 1 to 6. Your steps drive the action on the Huawei Vision screen. Walk forward, and you move down a 4K trail in the Alps. Step left or right, and your character dodges obstacles in a 3D adventure game. Your hands are free, so you can gesture to interact with the world.

The goal isn't to make you run faster or burn more calories; it's to make you want to get on the machine in the first place. As product lead Zhou Jing puts it, walking is our most natural form of movement. We explore, travel, and discover by putting one foot in front of the other. Linjing Roaming taps into that instinct, making your feet the most intuitive remote control for the big screen.

From Fitness Tool to Family Fun

Initially, the target user was the average office worker who wanted to get fit but couldn't stick with a gym routine. But during testing, the team noticed something surprising: kids loved it. At HDC 2026, children repeatedly queued up to play the games, while older adults asked about cushioning, stability, and safety. Linjing Roaming evolved from a solo fitness device into a family activity. It's not about pushing hard; it's about moving together, at your own pace, in a way that feels safe and welcoming for all ages.

Why HarmonyOS? Not Just Another App Store

Choosing to build exclusively for HarmonyOS wasn't a casual decision. The team spent months evaluating TV ecosystems and found most fragmented—cameras on some, not on others, varying chip capabilities, inconsistent developer support. For a product that relies on precise motion tracking and low-latency feedback, instability underneath means a broken experience on top.

HarmonyOS offered something different: a unified approach to multi-device connectivity. Linjing Roaming isn't just an app on a TV; it's a dance between the walking machine, the Vision screen, and potentially other smart home devices. HarmonyOS provides the distributed foundation to make that dance possible. The team attended HDC as users, studied the ecosystem's growth, and decided to go all in, even if it meant ignoring other platforms for a while.

The Hard Work of Feeling Natural

Getting the experience to feel intuitive was a battle on three fronts.

Gesture and Pose Recognition

Early HarmonyOS SDKs offered only 2D skeletal tracking, which meant less data to work with. The team had to iterate algorithms alongside system updates to handle complex poses and reduce interference. At HDC, with crowds milling around, the system sometimes locked onto the wrong person. A new locking mechanism helped, but it was a constant process of refinement.

Performance on TV Chips

TV processors aren't as powerful as high-end phone chips. The team faced a frustrating bug where a 3D model simply wouldn't move—it was too complex for the hardware. They had to compress models, adjust textures, and test repeatedly on actual devices, balancing visual fidelity against performance. The smoothness you see on screen is the result of countless hours of squeezing and tweaking.

Latency: The Invisible Enemy

Bluetooth was too slow. When you step, the screen should respond instantly. The team switched to Huawei's NearLink connection, and the difference was dramatic. The lag disappeared, making the experience feel truly connected. You don't notice low latency when it works; you only notice when it doesn't.

There was also a system upgrade hiccup—after a HarmonyOS update, the app showed a black screen. Two online meetings with the HarmonyOS team, some debugging, and it was fixed. These collaborations are part of the cost of being early on a platform, but they're also part of the benefit: the platform team is responsive and invested in your success.

What's Next: Social and Personalized Health

At HDC, the second most common question was, "Can I play with my friends?" Users want connection, even when exercising at home. The team is listening. They're planning online co-op modes, companion workouts, and more social features. They're also improving onboarding—new users often don't know how to move on the machine, so they're adding audio cues and clearer instructions.

Health data integration with Huawei Health is on the roadmap. The team is working through API permissions and partnerships. Eventually, the machine might remember that Grandma prefers a gentle forest walk for 15 minutes, while the kid gets a high-energy obstacle course. That's the long-term vision: a device that adapts to each family member, making movement a natural part of daily life.

Not Just a Treadmill

So, what makes Linjing Roaming different from a treadmill? It's not any single feature—it's the whole philosophy. A treadmill is about running in place. Linjing Roaming is about stepping into a world where movement is fun, where you're not counting down the minutes but playing a game, exploring a path, or just enjoying a walk through a beautiful place. It's a shift from "I have to exercise" to "I want to play for a bit." And that shift, backed by the HarmonyOS ecosystem, might just be what gets you off the couch and onto the machine, day after day.