Don't know how many people are unbanked due to refusal by financial institutions to open an account for them, but ChexSystems exists to let banks know if their

Don't know how many people are unbanked due to refusal by financial institutions to open an account for them, but ChexSystems exists to let banks know if their potential account holder has had banking issues in the past. At the lower end of the economic spectrum where margins for error are low, there likely is a non-insignificant number of people with bad banking histories who now find it difficult to open a bank account.