What makes QR codes such a stealthy, dangerous threat vector is how trusted and misunderstood they are.

A simple code of conduct that is enforceable, where everyone knows what is expected of them in terms of behaviour and dress code, could be the starting point to end bullying at schools.

Master criminals, serial adulterers, and other tinfoil-hat-wearers spend their lives looking over their shoulders, scared of being caught with a ...