A high-tech 'guardian angel' protection device trialled by Midland health workers is to be given to all NHS staff who work alone in the community.
The gadget looks like an ID card holder but using mobile technology it can secretly activate an alarm which connects workers to a 24-hour call centre for assistance.
Identicom operators then help locate the individual and can call for police support. The device can also open a phone line to make audio recordings of attacks.
It was trialled by 22 NHS groups last year, including Sandwell and West Birmingham NHS Trust and Wolverhampton City Primary Care Trust.
District nurse Tania Evans, who works for Wolverhampton City PCT, was one of the first to try the device out.
She said: "The Identicom system was easy to use and boosted my confidence in personal safety arrangements at work, because I knew support was available if needed."
The trust will begin issuing the gadgets later this year, with up to 800 frontline staff set to benefit.
On Wednesday, Health Secretary John Reid announced the device would be given to all lone community-based workers to protect them from violent attacks and abuse.
He said: "I am determined to do everything within my power to stop NHS staff suffering from violence and abuse.
"They dedicate their lives to caring for the sick and in return they deserve respect. Anybody who attacks our staff will face tough action and the possibility of jail. Up to 100,000 staff work alone in the NHS every day and thanks to this device they will have the knowledge that help is only a button away."
A report, Not Alone: Protecting NHS Lone Workers, aims to help better protect lone workers both on-site and within the community.
It suggests NHS bodies should ensure all solo staff are fully trained in risk assessment and conflict resolution, and also be advised on any patients who may pose a risk.
Jim Gee, chief executive of the NHS Security Management Service, said: "We have now successfully completed trials of the Identicom device and also negotiated arrangements to significantly reduce its price for the NHS."