In Kent a victim of stalking has created a mobile phone app that alerts family and friends if someone is in danger and tracks their movements.
It comes as stalking has been made a specific criminal offence in England and Wales from today in a move to improve the safety of victims.
Under the new Protection of Freedoms Act 2012, the Government has introduced two offences, stalking and stalking involving a fear of violence.
Previously, the Protection of Harassment Act 1997 did not specifically name stalking as an offence, instead citing two criminal offences of harassment.
An inquiry into stalking earlier this year by Parliament found that around 120,000 people are victims of stalking every year.