When you hear "an app that watches your posture through your webcam," one thought comes naturally: 'Is my face being captured and sent somewhere?' In fact, many apps and services do send images to a server for AI processing. A large model in the cloud does the computing, but in exchange, images travel across the internet.
On-device AI works differently
On-device AI is exactly what it sounds like: the AI model runs directly 'inside this device' rather than on a server. RightPose AI uses an on-device model released by Google (MediaPipe) to analyze camera frames right on the spot.
- The camera captures a frame
- That frame goes straight to the AI model on your computer (no internet transmission)
- The model only calculates the relative positions (landmarks) of your shoulders, neck, and head as numbers
- Once the judgment is done, the image is discarded on the spot — no saving, no sending
What the AI actually sees isn't a 'photo of your face' but the coordinates of points like your shoulders, ears, and nose. The entire coordinate calculation finishes on your device — nothing needs to go out over the internet.
So nothing goes out over the internet at all?
To be honest, while images and posture data never leave your device, general usage information such as app error diagnostics and subscription status checks does communicate with the server. But that's a completely different kind of data from 'an image with my face in it.'
Privacy isn't the only advantage of on-device processing. Since everything is computed right there without a round trip to a server, it responds quickly, and posture detection itself keeps working even when your internet is slow or down.
Why doesn't every app work this way?
On-device models have to be designed lighter than large server models, which makes them harder to build. Sending data to a server for processing is often easier to develop. We chose the on-device approach anyway, for a simple reason — for an app that keeps the camera on all day, we believed the safest thing is for those images to never leave your device.
This article is for general information only and is not a substitute for medical diagnosis or treatment. If pain persists or worsens, consult a medical professional.