A new 5G technology that alerts the emergency services when someone falls into the water has been trialled in Bristol.
Bristol Harbourside has started the successful first phase test of the 5G system.
The system is aimed at saving lives if someone falls into the harbour water.
It uses thermal cameras which are set up at certain 'trigger' points that work as barriers on the harbour wall.
Using thermal cameras means emergency services are given an accurate location of where the person fell in.
Within 36 hours of the system being installed, it successfully detected someone who fell into the water and services were alerted.
The incident happened in the day, and pedestrians helped the person out of the harbour.
The project was led by the West of England Combined Authority (Weca).