The idea of a vaccine passport was the reason I first got into the blockchain space back in 2014. However, that was before Covid-19 and my initial vision of how a vaccine passport could utilise blockchain technology was a mere pipe dream at a time when there was no need for it. That said, in recent months countries around the world have been forced to grapple with the challenges of a return to some semblance of normality. From negotiations between governments and pharmaceutical companies for vaccine contracts to a gradual loosening of border restrictions , success has varied from country…