There have been several reports in South Korean media this week of bodies going to the wrong families, with the error sometimes caught only after the remains were taken to a funeral home.
An "action plan" released by the government-wide emergency task force acknowledged that "there have been cases where the victims were wrongly transferred."
Remains will be transferred to families when there is a match using DNA testing or fingerprint or dental records, the task force said. The transfer will be temporary when a body is matched though identification or physical description, and authorities will wait for more authoritative evidence before making the transfer permanent.
The ferry sank April 16 on its way from Incheon port to the southern tourist island of Jeju. More than 80 per cent of the 302 dead and missing are students from a single high school in Ansan, south of Seoul.
Obama arrived today afternoon at the Blue House, South Korea's presidential residence, and presented President Park Geun-hye with an American flag that flew over the White House the day the ship sank. His first South Korean visit since Park took office last year was aimed at issues including North Korea, but he noted that his trip comes at a time of "great sorrow."
Obama said he was donating a magnolia tree from the White House lawn to Danwon High School in Ansan in honour of the lives lost and as a symbol of friendship between the US and South Korea.
