Customers wait at a cafe where a robot that takes orders, makes coffee and brings the drinks straight to customers is being used in Daejeon, South Korea, May 25, 2020. REUTERS/Kim Hong-Ji

Customers wait at a cafe where a robot that takes orders, makes coffee and brings the drinks straight to customers is being used in Daejeon, South Korea, May 25, 2020. REUTERS/Kim Hong-Ji

Customers place an order at a cafe where a robot that takes orders, makes coffee and brings the drinks straight to customers is being used in Daejeon, South Korea, May 25, 2020. REUTERS/Kim Hong-Ji

A robot that takes orders, makes coffee and brings the drinks straight to customers delivers an order in a cafe in Daejeon, South Korea, May 25, 2020. REUTERS/Kim Hong-Ji

A robot that takes orders, makes coffee and brings the drinks straight to customers delivers an order in a cafe in Daejeon, South Korea, May 25, 2020. REUTERS/Kim Hong-Ji

A robot that takes orders, makes coffee and brings the drinks straight to customers is seen in a cafe in Daejeon, South Korea, May 25, 2020. REUTERS/Kim Hong-Ji

A robot that takes orders, makes coffee and brings the drinks straight to customers is seen in a cafe in Daejeon, South Korea, May 25, 2020. REUTERS/Kim Hong-Ji

Robots that take orders, make coffee and bring the drinks straight to customers are charged in a cafe Daejeon, South Korea, May 25, 2020. REUTERS/Kim Hong-Ji

A robot that takes orders, makes coffee and brings the drinks straight to customers is seen in a cafe Daejeon, South Korea, May 25, 2020. REUTERS/Kim Hong-Ji

A robot that takes orders, makes coffee and brings the drinks straight to customers is seen in Daejeon, South Korea, May 25, 2020. REUTERS/Kim Hong-Ji

A robot that takes orders, makes coffee and brings the drinks straight to customers is seen in Daejeon, South Korea, May 25, 2020. REUTERS/Kim Hong-Ji

An employee stands next to a barista robot that takes orders, makes coffee and brings the drinks straight to customers in Daejeon, South Korea, May 25, 2020. REUTERS/Kim Hong-Ji

A customer picks up her drink at a cafe where a robot that takes orders, makes coffee and brings the drinks straight to customers is being used in Daejeon, South Korea, May 25, 2020. REUTERS/Kim Hong-Ji

A customer orders a coffee at a cafe where a robot that takes orders, makes coffee and brings the drinks straight to customers is being used in Daejeon, South Korea, May 25, 2020. REUTERS/Kim Hong-Ji

A robot that takes orders, makes coffee and brings the drinks straight to customers at their seats is seen at a cafe in Daejeon, South Korea, May 25, 2020. REUTERS/Kim Hong-Ji

A robot that takes orders, makes coffee and brings the drinks straight to customers at their seats is seen at a cafe in Daejeon, South Korea, May 25, 2020. REUTERS/Kim Hong-Ji

A robot that takes orders, makes coffee and brings the drinks straight to customers at their seats is seen at a cafe in Daejeon, South Korea, May 25, 2020. REUTERS/Kim Hong-Ji

A robot that takes orders, makes coffee and brings the drinks straight to customers at their seats is seen at a cafe in Daejeon, South Korea, May 25, 2020. REUTERS/Kim Hong-Ji

A robot that takes orders, makes coffee and brings the drinks straight to customers at their seats is seen at a cafe in Daejeon, South Korea, May 25, 2020. REUTERS/Kim Hong-Ji

South Korea's Gyeonggi Province officials demonstrate the Epidemic Investigation Support System (EISS) during an interview with Reuters in Seuwon, South Korea, May 15, 2020, in this still image taken from video. Video taken May 15, 2020. REUTERS/via Reuters TV

South Korea's Gyeonggi Province Governor Lee Jae-myung speaks during an interview with Reuters in Seuwon, South Korea, May 15, 2020. Picture taken May 15, 2020. REUTERS/Daewoung Kim

South Korea's Gyeonggi Province Governor Lee Jae-myung speaks during an interview with Reuters in Seuwon, South Korea, May 15, 2020. Picture taken May 15, 2020. REUTERS/Daewoung Kim

South Korean residents 89-year-old Jeong Nam-poong and 80-year-old Jang Yoon-hui , wearing protective masks, dance at park after their daytime discotheque 'colatec' has been closed amid the coronavirus disease (COVID-19) outbreak in Seoul, South Korea, May 19, 2020. Picture taken on May 19, 2020. REUTERS/Minwoo Park

South Korean seniors wearing protective masks dance at park after their daytime discotheque 'colatec' has been closed amid the coronavirus disease (COVID-19) outbreak in Seoul, South Korea, May 19, 2020. Picture taken on May 19, 2020. REUTERS/Cynthia Kim

South Korean residents 89-year-old Jeong Nam-poong and 80-year-old Jang Yoon-hui , wearing protective masks, dance at park after their daytime discotheque 'colatec' has been closed amid the coronavirus disease (COVID-19) outbreak in Seoul, South Korea, May 19, 2020. Picture taken on May 19, 2020. REUTERS/Minwoo Park

South Korean seniors wearing protective masks stand in front of closed colatec after the city issued an order of banning gathering at all entertainment facilities amid the coronavirus disease (COVID-19) outbreak in Seoul, South Korea, May 19, 2020. Picture taken on May 19, 2020. REUTERS/Minwoo Park

South Korean performers sing a song during a ceremony marking the 40th anniversary of the pro-democracy Gwangju Uprising at May 18 Democracy Square in Gwangju on May 18, 2020. Jung Yeon-je/Pool via REUTERS

South Korean President Moon Jae-in leaves after a ceremony marking the 40th anniversary of the pro-democracy Gwangju Uprising at May 18 Democracy Square in Gwangju on May 18, 2020. Jung Yeon-je/Pool via REUTERS

South Korean President Moon Jae-in speaks during a ceremony marking the 40th anniversary of the pro-democracy Gwangju Uprising at May 18 Democracy Square in Gwangju on May 18, 2020. Jung Yeon-je/Pool via REUTERS

South Korean President Moon Jae-in speaks during a ceremony marking the 40th anniversary of the pro-democracy Gwangju Uprising at May 18 Democracy Square in Gwangju on May 18, 2020. Jung Yeon-je/Pool via REUTERS

People wearing protective masks walk on an empty street in Itaewon following the coronavirus disease (COVID-19) outbreak in Seoul, South Korea, May 14, 2020. REUTERS/Cha Sangmi

People queue to enter the Chanel boutique at a department store amid the coronavirus disease (COVID-19) outbreak, in Seoul, South Korea, May 13, 2020. REUTERS/Minwoo Park

South Korean President Moon Jae-in speaks on the occasion of the third anniversary of his inauguration at the presidential Blue House in Seoul, South Korea, May 10, 2020. Kim Min-Hee/Pool via REUTERS

South Korean President Moon Jae-in speaks on the occasion of the third anniversary of his inauguration at the presidential Blue House in Seoul, South Korea, May 10, 2020. Kim Min-Hee/Pool via REUTERS

South Korean President Moon Jae-in speaks on the occasion of the third anniversary of his inauguration at the presidential Blue House in Seoul, South Korea, May 10, 2020. Kim Min-Hee/Pool via REUTERS

South Korean President Moon Jae-in speaks on the occasion of the third anniversary of his inauguration at the presidential Blue House in Seoul, South Korea, May 10, 2020. Kim Min-Hee/Pool via REUTERS

South Korean President Moon Jae-in speaks on the occasion of the third anniversary of his inauguration at the presidential Blue House in Seoul, South Korea, May 10, 2020. Kim Min-Hee/Pool via REUTERS

South Korean President Moon Jae-in speaks on the occasion of the third anniversary of his inauguration at the presidential Blue House in Seoul, South Korea, May 10, 2020. Kim Min-Hee/Pool via REUTERS

Soccer Football - 2020 K League 1 - Jeonbuk Hyundai Motors FC v Suwon Samsung Bluewings - Jeonju World Cup Stadium, Jeonju, South Korea - May 8, 2020 Jeonbuk Hyundai Motors' Yong Lee and Suwon Samsung Bluewings' Jun-jae Myeong after the match, despite most sports being cancelled around the world the local league starts behind closed doors due to the spread of the coronavirus disease (COVID-19) REUTERS/Kim Hong-Ji

Soccer Football - 2020 K League 1 - Jeonbuk Hyundai Motors FC v Suwon Samsung Bluewings - Jeonju World Cup Stadium, Jeonju, South Korea - May 8, 2020 General view during the match, despite most sports being cancelled around the world the local league starts behind closed doors due to the spread of the coronavirus disease (COVID-19) REUTERS/Kim Hong-Ji

Soccer Football - 2020 K League 1 - Jeonbuk Hyundai Motors FC v Suwon Samsung Bluewings - Jeonju World Cup Stadium, Jeonju, South Korea - May 8, 2020 Players react at the end of the match, despite most sports being cancelled around the world the local league starts behind closed doors due to the spread of the coronavirus disease (COVID-19) REUTERS/Kim Hong-Ji

Soccer Football - 2020 K League 1 - Jeonbuk Hyundai Motors FC v Suwon Samsung Bluewings - Jeonju World Cup Stadium, Jeonju, South Korea - May 8, 2020 Jeonbuk Hyundai Motors' Dong-gook Lee celebrates after scoring their first goal, despite most sports being cancelled around the world the local league starts behind closed doors due to the spread of the coronavirus disease (COVID-19) REUTERS/Kim Hong-Ji

Soccer Football - 2020 K League 1 - Jeonbuk Hyundai Motors FC v Suwon Samsung Bluewings - Jeonju World Cup Stadium, Jeonju, South Korea - May 8, 2020 General view during the match, despite most sports being cancelled around the world the local league starts behind closed doors due to the spread of the coronavirus disease (COVID-19) REUTERS/Kim Hong-Ji

Soccer Football - 2020 K League 1 - Jeonbuk Hyundai Motors FC v Suwon Samsung Bluewings - Jeonju World Cup Stadium, Jeonju, South Korea - May 8, 2020 General view during the match, despite most sports being cancelled around the world the local league starts behind closed doors due to the spread of the coronavirus disease (COVID-19) REUTERS/Kim Hong-Ji TPX IMAGES OF THE DAY

Soccer Football - 2020 K League 1 - Jeonbuk Hyundai Motors FC v Suwon Samsung Bluewings - Jeonju World Cup Stadium, Jeonju, South Korea - May 8, 2020 Jeonbuk Hyundai Motors FC's Gue-sung Jo in action, despite most sports being cancelled around the world the local league starts behind closed doors due to the spread of the coronavirus disease (COVID-19) REUTERS/Kim Hong-Ji

Soccer Football - 2020 K League 1 - Jeonbuk Hyundai Motors FC v Suwon Samsung Bluewings - Jeonju World Cup Stadium, Jeonju, South Korea - May 8, 2020 Jeonbuk Hyundai Motors FC's Jung-ho Hong heads at goal, despite most sports being cancelled around the world the local league starts behind closed doors due to the spread of the coronavirus disease (COVID-19) REUTERS/Kim Hong-Ji

Fans of South Korea's football club Suwon Samsung Bluewings watch a live broadcast of the opening match of 2020 K League 1 at a pub in Suwon, South Korea, May 8, 2020. REUTERS/Mah Soo-hyun

Fans of South Korea's football club Suwon Samsung Bluewings watch a live broadcast of the opening match of 2020 K League 1 at a pub in Suwon, South Korea, May 8, 2020. REUTERS/Mah Soo-hyun

Soccer Football - 2020 K League 1 - Jeonbuk Hyundai Motors FC v Suwon Samsung Bluewings - Jeonju World Cup Stadium, Jeonju, South Korea - May 8, 2020 General view during the match, despite most sports being cancelled around the world the local league starts behind closed doors due to the spread of the coronavirus disease (COVID-19) REUTERS/Kim Hong-Ji

Soccer Football - 2020 K League 1 - Jeonbuk Hyundai Motors FC v Suwon Samsung Bluewings - Jeonju World Cup Stadium, Jeonju, South Korea - May 8, 2020 Photographers in the stands, despite most sports being cancelled around the world the local league starts behind closed doors due to the spread of the coronavirus disease (COVID-19) REUTERS/Kim Hong-Ji

Soccer Football - 2020 K League 1 - Jeonbuk Hyundai Motors FC v Suwon Samsung Bluewings - Jeonju World Cup Stadium, Jeonju, South Korea - May 8, 2020 Suwon Samsung Bluewings' Adam Taggart shoots at goal, despite most sports being cancelled around the world the local league starts behind closed doors due to the spread of the coronavirus disease (COVID-19) REUTERS/Kim Hong-Ji

Soccer Football - 2020 K League 1 - Jeonbuk Hyundai Motors FC v Suwon Samsung Bluewings - Jeonju World Cup Stadium, Jeonju, South Korea - May 8, 2020 Jeonbuk Hyundai Motors FC's Murilo Henrique in action with Suwon Samsung Bluewings' Sang-hyeob Im, despite most sports being cancelled around the world the local league starts behind closed doors due to the spread of the coronavirus disease (COVID-19) REUTERS/Kim Hong-Ji

Soccer Football - 2020 K League 1 - Jeonbuk Hyundai Motors FC v Suwon Samsung Bluewings - Jeonju World Cup Stadium, Jeonju, South Korea - May 8, 2020 General view as players warm up before the match, despite most sports being cancelled around the world the local league starts behind closed doors due to the spread of the coronavirus disease (COVID-19) REUTERS/Kim Hong-Ji

Soccer Football - 2020 K League 1 - Jeonbuk Hyundai Motors FC v Suwon Samsung Bluewings - Jeonju World Cup Stadium, Jeonju, South Korea - May 8, 2020 Players come out before the match, despite most sports being cancelled around the world the local league starts behind closed doors due to the spread of the coronavirus disease (COVID-19) REUTERS/Kim Hong-Ji

Soccer Football - 2020 K League 1 - Jeonbuk Hyundai Motors FC v Suwon Samsung Bluewings - Jeonju World Cup Stadium, Jeonju, South Korea - May 8, 2020 Players wearing masks sit on the bench before the match, despite most sports being cancelled around the world the local league starts behind closed doors due to the spread of the coronavirus disease (COVID-19) REUTERS/Kim Hong-Ji

Soccer Football - 2020 K League 1 - Jeonbuk Hyundai Motors FC v Suwon Samsung Bluewings - Jeonju World Cup Stadium, Jeonju, South Korea - May 8, 2020 Jeonbuk Hyundai Motors players applaud for medical workers before the match, despite most sports being cancelled around the world the local league starts behind closed doors due to the spread of the coronavirus disease (COVID-19) REUTERS/Kim Hong-Ji

Soccer Football - 2020 K League 1 - Jeonbuk Hyundai Motors FC v Suwon Samsung Bluewings - Jeonju World Cup Stadium, Jeonju, South Korea - May 8, 2020 General view as players warm up before the match, despite most sports being cancelled around the world the local league starts behind closed doors due to the spread of the coronavirus disease (COVID-19) REUTERS/Kim Hong-Ji

Soccer Football - 2020 K League 1 - Jeonbuk Hyundai Motors FC v Suwon Samsung Bluewings - Jeonju World Cup Stadium, Jeonju, South Korea - May 8, 2020 General view outside the stadium before the match, despite most sports being cancelled around the world the local league starts behind closed doors due to the spread of the coronavirus disease (COVID-19) REUTERS/Kim Hong-Ji

Soccer Football - 2020 K League 1 - Jeonbuk Hyundai Motors FC v Suwon Samsung Bluewings - Jeonju World Cup Stadium, Jeonju, South Korea - May 8, 2020 General view inside the stadium before the match, despite most sports being cancelled around the world the local league starts behind closed doors due to the spread of the coronavirus disease (COVID-19) REUTERS/Kim Hong-Ji

Soccer Football - 2020 K League 1 - Jeonbuk Hyundai Motors FC v Suwon Samsung Bluewings - Jeonju World Cup Stadium, Jeonju, South Korea - May 8, 2020 General view outside the stadium before the match, despite most sports being cancelled around the world the local league starts behind closed doors due to the spread of the coronavirus disease (COVID-19) REUTERS/Kim Hong-Ji