About Contact Harald
Contact Harald is a contact tracing technology to quickly and accurately identify and contact positive COVID-19 cases
Contact Harald is a contact tracing system that uses Bluetooth®-enabled tracing cards (worn on a lanyard or clip) for people moving about within a defined area such as a building. Each person issued a Contact Harald card consents to provide their name and contact details (mobile phone number and/or email address). These details are stored on a secure, encrypted database – not on the card itself. A close contact is registered when two or more people wearing a Contact Harald card come within 2 metres (6 feet) of each other for a minimum period of 2 minutes. This contact data is downloaded from the cards to the encrypted database.
Featured articles
Check out some of the best features and news from Designing Buildings as well as key stories from around the web.
New measures to stop people being ripped off
Government to protect families from cowboy builders and aggressive bailiffs.
New Futurebuild showcase brings an innovation-first approach.
National Planning Policy Framework
Understanding the 2026 changes.
ECA's public affairs priorities
Member consultation opens to shape priorities for 2027 to 2030.
Dutyholder responsibilities from 1 July 2026.
Where performance meets practice
The Building Envelope Stage at UKCW Birmingham.
CIAT publishes briefing on planning reforms.
Leaders in Learning for Practice Network
Call for conservation leaders in learning to register interest in new network.
The importance of early engagement
Construction lessons from the Trillium HealthWorks Experience Centre.
Mayors are to be given planning call in powers
Mayors across England will be able to make the most important planning decisions.
The Master Builder: William Butterfield and his times. Book review.
Why construction can't afford to ignore the skills gap.

















