Microsoft Research's project MyLifeBits promises to record every sensation of your complete life. A small webcam shooting images the whole day long is your constant attender, an audio recorder saves all spoken words and sounds, other devices detect your body's life signals. In the end, almost every part of your life becomes digitized and after commenting all the data your saved life is a very big data base you may browse through. Nothing is forgotten, everything is browsable and if you want to recall the events of a certain date there is nothing that deters you.
In this Scientific American article (unfortunately only for paying customers, here's the open German version) some sample scenarios were described to prove that system's fitness. The stories deal with situations where people use their digital brain extender to overcome typical everyday problems: a market maker is warned by his system that he's wasting time with ineffective businesses, a student proves that his learning method is better than that demanded by his parents, an old lady's medical data is permanently recorded even when she's at home in oder to give her a warning when she's drinking too few and so on.
Many questions remain unanswered. The market maker is warned by the system, so his employer controls the data. What happens when the market maker wants to leave his company? Will he be pressed to erase his company-related binary memories or to leave them at his former company? Who determines when a certain procedure is getting ineffective? Where is the student's benefit if the system proves that his parents are right? Sure, the systems tells the truth, but what if the student misses his football match? Who controls whom - does the memory system help you or is it just another tool to put the curb on you?
Another thought: the old lady from the example above uses her spare time to refresh her memories of former times. At a certain age, dementia becomes a serious issue, so brain work is a useful thing. But is the permanent preoccupation with one's own memories healthy? Could this be another form of narcism when nothing but one's own history remains important? Will there be enough time and room to learn new things and people?
Kathryn Bigelow's underrated movie Strange Days (1995) tells a crime story in the near future. The story's hero is addicted to his own memories, this is made possible through devices that store one's feelings and visual impressions on disks. It is very difficult for him to let go his memories of his former girlfriend and solve his problems. The plot shows various crimes effected by misuse of this device (excessive memory feedback, trauma induction, 'snuff' memories), thus pointing at the ambiguity of that technique.
With the total recall device, scenarios like these might come true. This system doesn't allow you to forget, even if your memories aren't that enjoyable. Why should you want that (besides all interesting technical questions)? Will a system like that make you free, happy and self-determined?