You are a product manager at a payments company. Street vendors and small stall owners accept digital payments through a QR sticker, but 30% of them still prefer cash and a further 20% accept digital payments and immediately withdraw the full balance. Most operate single-handed, cannot leave the stall during trading hours, and reconcile takings by memory at the end of the day.
Design a product or feature for this segment. Choose who exactly you are designing for, find the need that matters most, propose something concrete, and say how you would measure it.
100 points, 60% to pass.
The trap is treating cash preference as a trust or literacy problem and designing education. The behaviour described — accept digital, withdraw everything immediately — says the money is needed as working capital the same day, for restocking from a supplier who wants cash. The real need is same-day access and a way to reconcile without leaving the stall. Strong answers pick one of those and go deep: instant settlement, an audible confirmation the vendor can hear over traffic while serving, a daily total by voice or SMS, or credit against observed takings. Measure repeat digital acceptance and the fraction of balance retained overnight, not app installs.