Once we pass Thanksgiving on the calendar, I start to feel some benevolent pangs. I find myself wanting to do something decent for others. I also noticed that every time I pass a homeless person on the street, I have no cash. I want to donate, but in 2017 we’ve mostly stopped carrying around cash. That’s when I had an idea — if homeless people could use cashless payment services (like Venmo) to accept donations, more people would donate. We walked around NYC looking for an agreeable partner in this experiment until we found one: Eric Roster.