BlinkRoll: Vertical Scroll

BlinkRoll is an Android accessibility tool that turns deliberate eye blinks into vertical scrolling, moving long screens up or down in compatible apps. It helps users with upper-limb motor impairments navigate apps and web content without repeated taps or swipes. The front camera recognizes eye blinks and sends a vertical scroll action to the current screen.

Key features:
- Both directions (default): close briefly or hold closed longer, then open, to move in opposite directions
- One direction · Continuous: blink to move quickly in one configured direction each time
- One direction · One screen: close longer, then open to move one screen in one configured direction
- Primary direction and movement distance controls
- Session distance shown for blink-controlled movement
- A small indicator that shows the current status
- Start and stop scrolling from notifications and Quick Settings
- Protective behavior when the screen is off or locked, access expires, or the device becomes hot
- Camera frames are processed only on the device
- Current-screen scrolling through Android Accessibility Service

Privacy:
BlinkRoll does not send or store camera frames, face images, or face landmark data on a server. Eye blink detection is processed on the device.

How to use:
1. Allow camera and notification permissions.
2. Turn on BlinkRoll scroll control in Android accessibility settings.
3. Try 5 minutes without an ad. After that, finish 1 rewarded ad to get 30-minute free access.
4. Start with Both directions. Switch to One direction · Continuous or One direction · One screen only when needed.
5. Tap Start scrolling, move to another app, and close and reopen your eyes once.

Safety:
BlinkRoll is not a medical, diagnostic, treatment, or vision protection app. Do not use while driving, walking, or performing dangerous tasks. Stop scrolling and rest if your eyes feel tired or uncomfortable. Recognition accuracy may decrease in very dark environments, strong backlight, or unstable camera conditions.