Good news for road warriors: Keeping track of travel expenses is getting a whole lot easier. From mobile apps with voice recognition to online travel-booking sites, new technology is allowing employees to record and create expense reports on the fly as they travel, so they don't have to spend as much time after the fact tallying up their costs. The innovations are reducing one of the biggest headaches business travelers face: keeping track of receipts, submitting expense reports on time and facing questions about the legitimacy of certain charges. "I am so glad the days of having to carry around and protect receipts are over," says Michael Jacobs, chief procurement officer for office-supply company Staples Inc., which uses expense-processing technology from Coupa Software. In addition to streamlining expense reporting, the tools are helping organizations save money by making it easier for employees to comply with company travel policies.