If you take a look around the gym or on the bus, you'll notice that Apple's AirPods are proving to be a very popular purchase.
However, it has been revealed that a trick can transform the AirPods from a merely handy, cord-free way of listening to music into basically modern spy equipment.
A software feature of the new operating system contains a 'Listen Live' feature, which was created to help hearing-impaired users.
However, it turns out that the AirPods have a 15m reach with their connection to the phone, meaning that you could leave your phone in a different room and, if you were so inclined, listen in to other people's conversations.
All we'll say is use this new-found power wisely...