Thanks to https://alfred.camera/

Simple security at your fingertips.

Everyone deserves peace of mind, alfred made security easy and free for everyone.

Step1.

Install on two phones

Prepare two phones and install Alfred on both devices.

Step2.

Sign in with Gmail

Open Alfred on the two phones and sign in with the same Google account

Step3.

Enjoy Alfred

Set one phone as the Viewer and one as the Camera, and enjoy simple security.