The object which passed the virtual line is perceived and alarm is sounded.
Please trace a screen top and pull a virtual line.
Sensitivity can set up five steps.
When perceiving, it sounds with pi.
Surveillance can be started from a menu.
Since a virtual line is freely over, it can also be surrounded with a circle etc.
Compatible with Android 11.
![Google Play Store40.6.31-23 [0] [PR] 626489609_Androidswiki.net](https://qn-resource.androidswiki.net/prd/image/da7c4520-0779-d35f-2f15-ab1aefcab11f.png-160)
Download (1.9MB)
