A device that makes a high-pitched sound that only young people can hear is to be removed from Aberdeen train station after opposition from youth representatives.
The “mosquito” – which aims to discourage antisocial behaviour – was installed near the station’s Union Square entrance around 2012.
Security guards can use it to emit a sound when it is deemed necessary.
The pitch of the sound is so high only younger people can hear it – and the aim is to make a noise so uncomfortable they disperse.
ScotRail has now said it has banned the use of the devices after a review.
The firm said the devices were installed in Aberdeen before the current franchise holder Abellio took over in April 2015.
It is understood the device was used on a handful of occasions before that point to tackle antisocial behaviour and has not been used since.
They had also been installed at Hamilton Central and Helensburgh Central.
“ScotRail’s review concluded, given the low usage of the devices, and the lack of evidence to show the positive impact of the devices in isolation, they should be removed,” said a ScotRail spokesman.
Children and young people’s commissioner for Scotland Bruce Adamson said: “The use of mosquito devices is not a proportionate response to young people meeting in public spaces.
“Anti-loitering devices are a breach of young people’s human rights and their use is indiscriminate and inhumane. We must not tolerate their use in Scotland.”
A spokesman for Aberdeen City Youth Council (ACYC), which has been campaigning for the ban, said: “This is fantastic news and shows how young people’s voices do matter in shaping their home towns and cities into a safe and welcoming place.”
North-east MSP Kevin Stewart said: “Well done to ACYC for their campaigning on this issue. I am glad that ScotRail has listened to concerns.”
David Lister, ScotRail Alliance director of safety and sustainability, said: “Following a thorough review of the use of mosquito anti-loitering devices, we have taken the decision to ban them from the three stations at which they are currently installed.”