Avlytics has a Tamper Checking facility.

 
The tamper test happens every 1 Minute.

The Device looks at each of the Tamper snapshot per channel and creates a Score for the tamper snapshots.

Validate that each of the Tamper Snapshots are of the correct scene and delete tampers that are not relevant or if the images are of the wrong camera position.
To delete simply click on the X for the Tamper image you want to Delete. 

You should have at least 2 Snapshots for the Tamper logic to execute.
Best practice is to have 2 Day images and 2 night images for each channel. 

2) The Pixel Score 

In the device_config.json  we need to set these Variables or Limits which determines when a tamper condition is met. 

Every Minute the Device checks what the structure score is on the current live stream image and measures that against the Tamper Snapshots Score and if it is still within the Range , then don't generate a Tamper, But if it is Outside of the Range , then Generate a Tamper Condition.

You can see the Current Snapshot Score values as they are evaluated by logging into the Devices edge web interface and looking at the TAMPER row under Maintenance Menu Item. 

In the below image we can see that Channel 1 went into a Tamper condition twice over the last 12 Hours. 

Next we have to Playback the Video at those Times and verify what the camera saw that generated this Tamper condition.

If it was something that we believe should not create a tamper then we can Adjust the tamper Thresholds in device_config and retest over 12 Hours again.