is user name and pass word kept on the vita memory card or bios

[coolguy]

hey i sent back my vita and i took out the 32 gig memory card andi for got to format it
is my user name and pass word on it?? or is it kept in the vita it self i might sell the 32 gig memory card

[claud3]

It is kept by them SONY on the database for all things related to the VITA... Unless you completely delete them

[EatSleepAndPlay]

hey i sent back my vita and i took out the 32 gig memory card andi for got to format it
is my user name and pass word on it?? or is it kept in the vita it self i might sell the 32 gig memory card

Change your PSN password. Play it safe.