Mobile phone applications built to save lives
4 October 2011 Last updated at 00:05 BST
Mobile phone applications that help dispatch emergency responders are being developed in the US, allowing their users to receive more immediate care.
These applications employ the use of GPS technology to pin down the location of those in need of care and are capable of calling for helicopters and finding individuals who know CPR.
Produced by the BBC's Matt Danzico