Genius dad invents clever app for his kids

A genius dad has invented a clever app that locks kids' phone screens until they respond to their PARENTS' messages.

Nick Herbert, 47, was so frustrated with son Ben, 15, ignoring his texts he took matters into his own hands.

The project manager invented an app that 'hijacks' his son's phone by locking the screen, stopping him from doing anything until he reads the message.

It sounds an alarm until the child reads it - even if their phone is on silent - then pings back a message to the parent, informing them the kid has read the message.