Digital payment authentication must move beyond passwords and one-time passwords (OTPs) as artificial intelligence-driven commerce gathers pace, a top Visa official said on Thursday. "Authentication cannot remain dependent on passwords or one-time codes designed for an earlier digital era. It must become secured by design, invisible to the consumer, and resilient against increasingly sophisticated fraud," Suresh Sethi, group country manager for India and South Asia of Visa, said at a company event.