In South Korea, students should pay for everything they learn in classes from K-pop auditions to real estate deals. Now, top Korean firms are introducing artificial intelligence in hiring and job seekers want to learn how to defeat the robots to get a job.

Many major South Korean companies like SK Innovation and Hyundai use AI in hiring, which generates classes for AI hiring booming fast. Career advisor Park Seong-jung is now offering a three-hour training course in handling recruitment, screening by computers, not people.

Preparing for such tests doesn't necessarily involve simply memorizing answers. "Don't force a smile with your lips," Park Seong-jung told students looking for work in a recent session, one of many in which he said he has conducted for hundreds of people. "Smile with your eyes."

One AI video system review ed by Reuters asks candidates to introduce themselves, during which it spots and counts facial expressions including "fear" and "joy" and analyses word choices. It then asks questions that can be tough: "You are on a business trip with your boss and you spot him using the company credit card to buy himself a gift. What will you say?"

Kim Seok-wu, a 22-year-old senior at a top university, recently failed to get beyond an AI interview for a management position at a retail company. "I think I will feel hopeless if all companies go AI for hiring," Kim said. "The AI interview is too new, so job hunters don't know what to prepare for and any preparations seem meaningless since AI will read our faces if we make something up."