One Badge, Two People Through the Door
An overhead camera counts everyone who crosses the threshold of a controlled door, gate or turnstile. When more people go through than should, CrowdSense raises an alert and sends it to your access control or your security provider.
The Card Reader Counts Badges, Not People
An access control system knows when a badge was presented. It does not know how many people walked through while the door was open. Backstage gates, accreditation points, staff entries and plant rooms are all held open for the person behind.
A camera over the doorway counts the people who actually cross. Compared with the badge events, or flagged when two people cross close together, it shows where tailgating happens and how often.
What It Adds to Your Access Control
Every crossing counted
A line across the threshold counts each person and the direction they went.
Tailgating flags
An event is raised when two people cross the line close together, for review.
Compare with badge events
Line crossings are available live over the API and webhooks, so your access control or integrator can match them with badge swipes.
Event recording
Record a short clip on your own PC when an event fires, so someone can check what happened.
Alerts to the right people
Send alerts by webhook to your access control, your security provider or your own tools.
Patterns by door and hour
Which doors are tailgated, and when, to target training, signage or door changes.
Watch a Door in Four Steps
- 01
Install on a Windows PC
Download CrowdSense Desktop and install it on a Windows 10, 11 or Server PC on the same network as your cameras, then sign in.
- 02
Add your cameras
Paste in each camera’s RTSP address, find it over ONVIF, or plug in a webcam. Choose the AI people profile.
- 03
Draw the threshold line
Draw a counting line across the doorway, and switch on event recording if you want clips to review.
- 04
Send the alerts
Connect the webhook to your access control or security provider so each alert reaches the people who respond.
Where to Put the Camera
Detection profile: AI people. Any IP camera that streams over RTSP works, with ONVIF optional, and so does a USB webcam.
Mount the camera overhead, looking straight down at the doorway (0°). People stay separate when seen from above.
A person needs to fill at least 3% of the frame’s width. If they look tiny on screen, zoom in or move the camera closer.
Put the line just past the door, where everyone who comes through must cross it, and keep the swing of the door out of the line.
Keep the doorway evenly lit, day and night.
Pay per Camera, per Event or per Month
All prices in Australian dollars, excluding GST. One feed is one camera stream.
Event pass
$195
per feed, per event
One event is one primary location, one name and branding, up to 5 days. Feeds go live 14 days before the first day for set-up and testing; dashboards and the post-event report stay readable for 3 months after.
Always-on
From $39
a feed a month, yearly plan
For venues that count every day. Month to month it is $69 a feed for up to 9 feeds, and less at volume. Every band is on the pricing page.
Free trial
14 days
up to 4 feeds
A card is taken at sign-up. Nothing is charged until day 15, and you can cancel any time before then.
No cameras where you need them? For events, we hire Vision Nodes and the crew to install them.Get an events quote.
Who Watches Their Doors
Event production and accreditation
Backstage, artist and production gates where one pass is meant to mean one person.
Stadiums and venues
Staff, service and restricted entries alongside the venue’s access control.
Offices and data rooms
Controlled doors and turnstiles, with patterns to show where tailgating happens.
Security integrators
Line crossing events over webhooks, ready to combine with the access control they install.
Video Stays on Your PC. Only the Numbers Leave.
CrowdSense Desktop analyses the video on the Windows PC it is installed on. What reaches the portal is text: a line was crossed, a zone filled, a queue grew. No video and no images are uploaded, and nothing sent can identify a person.
The software detects people and vehicles so it can count them; it does not identify anyone. No facial recognition, no biometric identification of people. Ever. Your cameras, your recordings and your footage stay on your site, under your control.
Anti-tailgating security, Answered
Does CrowdSense respond to alerts?
No. CrowdSense raises the alert and sends it to your access control, your own team or your licensed security provider. We do not monitor sites or respond to alarms.
Does it replace security staff?
No. It is not a security system and does not replace guards or access control. It adds a count of people at the door so the people responsible can act.
Can it work with our access control system?
Yes, through webhooks and the REST API. Your access control provider or integrator matches line crossings with badge events and decides what happens next.
Does it identify who tailgated?
No. It counts people crossing a line. If you keep event recordings, they stay on your own PC and are handled under your own policies.
What camera do I need?
Any RTSP camera mounted overhead at the door, with people at least 3% of the frame width.
Try It Free on Your Own Cameras
14 days free on up to 4 feeds. Install on a Windows PC, add a camera, draw a line.
