Right now it seems like first in first out option with what you are able to remember ... It would be nice to be able to have a forget option for useless information ... right now I assume many people might remember a code for a one or two night rental of a cube or something which is of no use after the time period is up, however they might want to remember something much more permanent for a longer period of time. I understand you could possible rememorize the more important information and then it would force the older information out but thats a little tedious. If there were an option to forget specific things in your memory or give an importance rating to certain things that would cause them to be remembered longer rather than just scrolling in your memory based upon your intelligence, I feel that could be useful.