During the "PS Vita Game Heaven" online press conference, Sony detailed the Japanese "UMD Passport" program which allows Vita owners re-buy their already owned UMDs on the PSN for a drastically reduced price.

The PS Vita does not use UMDs. Instead, it uses cartridges and digital downloads. The UMD is going extinct, putting current PSP owners in a bind should they want to play their PSP titles on the Vita.