The smartphone can be mirrored for educational purposes and used like a real presenter.

1. Galaxy s9, s8 is the biggest reason to create the app on the camera screen in real-time mirror when you show it does not change to landscape mode is shown only in portrait mode.
So I made it possible to view it in landscape mode by software.

2. If you touch the screen while shining the learning materials like the actual presenter, the screen is captured and the screen becomes a still image. Important data can be presented without shaking.

3. You can enlarge or reduce the still image, and if you adjust the transparency, you can make the effect that the transparency film is printed on the screen in real time.
 You can compare the learning materials you have just taken and the learning materials you see now by adjusting the transparency.

4. You can simply draw a line on the still image to show or highlight important parts.