[split] Community Auth - session variables?

Thanks for the reply Guro,

i wish to add some session variables like username, name etc. ....

Code:

__ci_last_regenerate|i:1518568247;auth_identifiers|s:83:"a:2:{s:7:"user_id";s:10:"1307276232";s:10:"login_time";s:19:"2018-02-14 01:30:47";}";

aside from user_id and login_time how may i able to add some data ?