The original version of this story misstated the reason that a federal judge imposed e-discovery sanctions on TD Bank and its law firm, Greenberg Traurig. U.S. District Judge Marcia Cooke said the bank acted willfully, while the law firm acted negligently. We regret the error.

As TD Bank works its way out of an e-discovery mess that included court sanctions against its in-house and outside counsel, it is experimenting with cutting-edge technology. And the Toronto-based bank is hoping to save money in the process.