Colour-changing wristband sends alert when a person is being harassed or sexually assaulted

A wristband which sends an alert if the wearer is being sexually assaulted or harassed on a night out has been developed by a student.

Design student Beatriz Carvalho, 21, invented the discreet band and accompanying app which alerts friends and nightclub staff if a person feels they are in danger.

If the wearer finds themselves in an uncomfortable situation, they can tap the wristband to trigger the alert through the app.

A double tap will make the wristband light up and send a second alarm to bar and nightclub staff.

After suffering from an incident where she was harassed as a teenager, Ms Carvalho wanted to help potential victims and 'educate perpetrators'.

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