Ambulance crews in the Northwest are thanking people across Cumbria for helping to register the location of public defibrillators.
The service says the life-saving kit is useless if no-one knows where they are in an emergency.
In 2014/15, there were nearly 900 cardiac arrests across the county.
The Northwest Ambulance Service launched what it's calling 'Shocktober' campaign this month, to make sure paramedics can be directed to the nearest public defibrillator.
They say their social media feeds have "gone into meltdown" since their request for help.
NWAS Community Engagement Manager, Andy Redgrave said: “We thought we may get a few pictures of forgotten defibrillators but we never imagined the response from the public would be so great. In the first week alone we learnt of least 40 defibrillator locations that we weren’t aware of previously, we’re currently checking the others we have been told about so as the month goes on, we hope to increase this further.
“The Trust is extremely grateful for the support shown by the public, we’ve even had pictures from Florida, Hong Kong, Spain and Amsterdam! It’s heartening to learn that all these people know the importance of having a defibrillator in public places. A cardiac arrest can happen to anyone – young or old, at any time and the use of a defibrillator within the first few minutes, while help is on the way, can improve the chances of survival by up to 70 per cent.
“Please keep those selfies coming. In some way, everyone who sends us a picture with location details is contributing to saving the life of someone in their community.”