Zerodha's first customer

@nithin I always wondered how you got your first customer. In 2010, I am sure that the internet wasn’t trustworthy and on top of that convincing people to trade on an online platform with whole new experience must be dauting task. How did you solve this challenge? How did you get your first customer?
I would love to know how did you convince a stranger to use your platform. How you gained their trust!