Live Facial Recognition Deployments and Results
Hampshire and Isle of Wight Constabulary uses facial recognition technology to prevent and detect crime and help protect the vulnerable.
Here you can find the latest publicly released data on our live facial recognition deployments and the results we have had from those deployments.
Facial Recognition is a technology capable of comparing a human face from a digital image against a database of faces. You can click here to find out more about our use of facial recognition technology.
The data for the deployments can be found below in a PDF format. It may not be compatible with all accessibility technology so it is also shown and described further down this page in a more accessible format.
Data
Live Facial Recognition Deployments HIOWC 10/9/24 - 12/09/24
Data in a more accessible format
The threshold settings for all deployments shown in the table is 0.64.
The threshold setting affects the number of matches the system makes. It can be set by the user. The lower the threshold the more likely the system will make a match so a higher threshold leads to more accuracy.
| Deployment | Date | Watch list number** | Total Alerts | Interventions | Arrests / Disposals | Faces Seen |
|---|---|---|---|---|---|---|
| Portsmouth | 10/09/24 | 1142 | 2 | 2 | 2 | 66980 |
| Southampton | 11/09/24 | 1093 | 1 | 1 | 2* | 109740 |
| Basingstoke | 12/09/24 | 1061 | 4 | 4 | 5* | 40254 |
| Winchester | 12/09/24 | 1061 | 0 | 0 | 0 | 105488 |
*1 individual arrested during deployment however not as a result of an alert
**Watch list number is the number of faces the system has on it at any one time to compare against the people it sees.
There were no incorrect alerts at any of the above deployments.