Methods to delete face data are as follows.
1. To delete a single face: Go to [Discover]-[People], tap a face picture, and view the detail page. Tap “Edit”, then you can delete pictures.
2. To delete all data of a device, Go to [Device] and tap the settings icon of the device in the list.Then find the”SERVlCE”>”Facial recognition.” Enter the page and find the button [delete data].
It will erase human face data with the device and can't be recovered.