Barnet Council has equipped more than 200 social workers with mobile devices for sharing data on the move.
The deployment of O2 XDA II handhelds makes Barnet one of the first council social care departments in the UK to deploy a mobile data-sharing application, said O2.
The devices run the Intellisync Mobile Suite's File Sync e-mail and diary management applications over O2's GPRS network.
Helen Wylde, O2's head of corporate marketing, said, "It might have been possible to deploy a desktop solution providing some of the functionality, but this would have meant pulling frontline staff into the office."
The implementation is intended to help Barnet's social services staff implement the government's Every Child Matters strategy, a key objective of which is the effective sharing of information.