By Veronika Bondarenko HSBC is buying a piece of land on The Sandbox for an undisclosed sum. Traditional banks are not exactly known to embrace innovation — from the difficulties behind regulating cryptocurrency to the voids being filled by fintech startups, the big players are far more likely to take a conservative approach to money and hold off on new technology long after it has entered public discourse. Banks still require signatures when schools (at least some of them) no longer teach cursive writing. It’s an industry stuck in the past that often appears unwilling or unable to give up tho…