This is pretty simple, but a huge benefit for us.
My Mother is in a retirement home, independent living, but more and more she’s needing us to keep an eye on her. She has a Hikvision IP camera that records on motion to an SD card in the camera. Her internet service is very slow so it can be a bit cumbersome to log in and check the recordings to see if she is home, was up in the middle of the night etc.
I was reading through some of the HA docs and spotted the Hikvision component.
Just a couple lines of config, and a setting tweak on the camera, and now we have a binary sensor with history right on the front page of our HA interface. We will still check videos, but it’s great to see motion at a glance. I may do some scripting to alert or show a status indicator for motion detected between midnight and 6 am, or no motion detected for xx hours during the day.
Hmm, posted too soon. It seems to be unreliable at the moment. Disconnects after a random amount of time. No errors on the camera, no timeouts that I know of (my computer can be logged in for 24 hours) and “WARNING (Thread-3) [pyhik.hikvision] HIK-8 Connection Failed (count=1). Waiting 10s. Err: Watchdog failed.” in the HA log.
I encountered similar issues with the Hikvision component. I swapped cameras, updated camera firmware, re-positioned the camera, tried a Bayesian sensor combining all of motion, PIR, and line-crossing. After some variable period of time, the Hikvision component simply stopped working. 
Using the URL of the camera’s status page in a web browser, it was clearly not the camera; it was still reporting status as normal.
Yeah, my local Hikvision cameras are rock solid, never disconnect, but the remote one just dies after an hour or so
Update:
My mom moved, and got a faster upload internet connection, and it’s been about 90% solid.
Only 1 or 2 disconnects in the last 3 weeks.