Rescue teams searching for earthquake survivors in central Italy have asked locals to unlock their wi-fi passwords.
The Italian Red Cross says residents' home networks can assist with communications during the search for survivors.
On Wednesday a 6.2 magnitude earthquake struck central Italy and killed more than 240 people.
More than 4,300 rescuers are looking for survivors believed to still be trapped in the rubble.
On Twitter, the Italian Red Cross posted a step-by-step guide which explains how local residents can switch off their wi-fi network encryption.
Similar requests have been made by the National Geological Association and Lazio Region.
A security expert has warned that removing encryption from a home wi-fi network carries its own risks, but added that those concerns are trivial in the context of the rescue operation.
"If someone gets on your wi-fi network, what they do from that point onwards would be appearing as if they were you," said Dr Joss Wright, a research fellow at the University of Oxford Internet Institute.
Dr Wright told the BBC that, once given access to a user's wi-fi network, a person potentially has access to certain devices and files.
"But frankly, in a situation like this, those concerns are outweighed by the emergency need," he added.