By WSJ. Custom Studios At the end of a winding dirt road in Gazipur, Bangladesh, women crowd into a fluorescent-lit stall. One of them, Khodaza Khatun, is providing her fingerprints for a tiny biometric scanner. One by one, she presses her fingers on the machine, pausing to adjust the folds of her peach-colored sari. When she’s finished, she’ll have opened her first bank account.