Face recognition for the cameras you already have
Litmus NVR can find a person in your recordings by face, even if you never registered them, and run actions when a registered or unregistered face appears. It is free, and face data stays on your own computer.
What it does
- Search by any face, no enrollment. Pick a face in your footage and find the other recordings it appears in.
- Cards grouped by face. History > Cards > Faces shows one card per person. Open a card to see their stays across cameras in time order.
- Register from your recordings. No separate photos: select a face card or tiles and name them. Registering front and side views in bright and dim light improves recognition.
- Alerts for registered and unknown faces. Run actions when a registered face, an unregistered face, or one specific person appears.
Turn it on
- Install Litmus NVR and connect your cameras.
- On the Settings tab, open Face recognition, turn on the switch, review the privacy notice and click Agree and turn on, then Save. The setting applies to all cameras in the place.
- Face data is included only in recordings saved after you turn it on.
- To register a person, open History > Cards > Faces, select their card or tiles, click Register and choose a name.
Before you use face recognition
With face recognition on, a face signature is stored for everyone the cameras capture. Signatures are numeric data, not photos, and are stored only on the device. Many jurisdictions classify face data as sensitive information (for example, GDPR, Illinois BIPA and Korea’s PIPA). Signage, prior consent and retention limits may be required, and use is prohibited in some regions. You are responsible for following the rules at your site.
Questions
Do I need to register faces to search by face?
No. Pick any face in your footage and search. Register a face only when you want an alert when that person appears.
Can I find someone when the face is not visible?
Yes. People cards and appearance search compare clothing and build, so they work from behind or at a distance, without face recognition.
Is Litmus NVR really free?
Yes. Every feature is free with no camera limit. Live View over a direct connection is unlimited.