It's long been assumed that technology will help the financially underserved access the banking services they need. Christine Duhaime, an attorney and founder of the Digital Financial Institute, a financial technology think-tank, says this assumption is wrong, and that some tech advances are already starting to have unanticipated adverse effects on the financially disadvantaged. Banks will have to think creatively — by teaching people to code and maybe even making house calls — to ensure they provide fair access to services.