Permissions appear in Tron 2.0. They can downloaded from archive bins and dump cores. They are used to give the player authority to interact with things (sec rezzers, bridge controls ect.), and to download e-mails, subroutines and more permissions from the archive bins. There can be maximum eight (tought levels with eight permissions are extremely rare). Without proper authory the item the player wanted to interact with shall say 'you haven't got enough permissions to do that'. Sometimes (though this is uncomfirmed), several highly important terminals activated without proper authorization might cause all nearby sec rezzers to spawn ICPs.