下載 APKPure App
可在安卓獲取Optical Messenger的歷史版本
在課堂上沉默的光通信，在工作中，在講座等
- Silent optical communication in class, at work, during lectures, etc
- Write a message and show it to someone
- Automatic formatting for maximum font size in billboard mode
- Long-range communication using tablet and marquee mode
- Modes: billboard, marquee