It is important to keep an eye on our kids nowadays, especially if both parents work during the day. We have to check on them every hour if not minutes.
That was the reason I installed CCTV cameras at home. Started with a cheap wifi camera, and then finally upgraded to proper CCTV cameras with all the features to monitor our fur babies from work.
All cameras are placed in strategic locations and recorded for safekeeping just in case we need to review what happened at a certain time.