More than one billion young people risk damaging their hearing through excessive use of smartphones and other audio devices, the UN has warned, proposing new safety standards for safe volume levels. In a bid to safeguard hearing, the World Health Organization and International Telecommunications Union issued a non-binding international standard for the manufacture and use of audio devices. WHO considers a volume above 85 decibels for eight hours or 100 decibels for 15 minutes as unsafe. The safe listening devices and systems standard calls for a “sound allowance” software to be included in all audio devices, to track the volume level and duration of a user’s exposure to sound, and to evaluate the risk posed to their hearing. This system could alert a user if they have dangerous listening habits.