People who find themselves in uncomfortable situations on dates are being given a discreet way to summon help.
The campaign works by allowing people to ask at a bar for 'Angela' - which will signal to staff they are feeling uneasy and need help getting out of the situation.
Pubs and bars in Lincolnshire, UK, have been given posters by the local county council promoting the campaign which say: "Are you on a date that isn't working out? Is your Tinder or PoF (Plenty of Fish) date not who they said they were on their profile?
"If you go to the bar and ask for Angela, the bar staff will know you need some help getting out of your situation."
It has been suggested the poster campaign, which was launched in September, should be rolled out nationwide.
The campaign received a boost of publicity on social media site Twitter when 21-year-old Isobel O'Brien sent a picture of a poster along with the caption: "I saw this in a toilet and thought it was important and should be a thing everywhere, not just Lincolnshire."
The Lincoln-based student said she was on a date herself when she first saw the poster and added: "It made me think 'What if an individual feels physically uncomfortable and unsafe?' and 'What if you had met with somebody and they weren't who they advertised themselves as on a dating app?'
"So I thought that the Ask for Angela idea was fantastic. It gives people that security to know that if they feel unsafe that this system is in place."
Adding she felt the poster campaign should be extended further afield, she said: "Sexual violence and abuse is such a huge issue, with so many cases going unreported.
"I think when people see this, they see it as a preventative scheme to help individuals escape the uncomfortable situation before the violence and harassment, or if it had already taken place, a chance for people to get out before it gets worse.
"It's important because many individuals may not have the confidence to do that alone so the support of the bar staff is a huge aid."
Hayley Child, from Lincolnshire County Council, said people had sent messages to the authority praising the campaign.
She said: "We have had a really positive response to the campaign, including thanks from victims of abuse for the work that's being done.
"Around the country and the world people have sent us messages saying what a great idea this is, and the response has been amazing.
Just ask for Angela. pic.twitter.com/sN4G4EFynO— K8 (@notyourang3l) November 10, 2016
"We'd seen that a few individual pubs around the country had done similar messages at the bar saying that if people's dates weren't going well the bar staff would help and call them a cab. We wanted to do this in a more organised way, and worked with the pubwatch schemes in Lincolnshire to get the bars to take part."
She added the posters were part of a wider campaign which aimed to "promote a culture change in relation to sexual violence and abuse".