1. A system for communicating with a computer comprising: a) a capture device wearable by a user, the capture device having sensors to monitor the user's mental activity and to capture a particular brain activity pattern indicative of the mental activity generated in the user by a particular subject, wherein the capture device comprises an electroencephalogram (EEG) capture device and the captured brain activity pattern is a captured EEG profile; b) at least one data storage device operable for storing a plurality of stored EEG profiles, each of the stored EEG profiles being associated with at least one computer readable indicia indicative of a subject that generated that EEG profile, wherein the computer readable indicia comprises at least one keyword; c) at least one processor operatively connected to the capture device and the at least one data storage device, the at least one processor being operable to: i) receive the captured EEG profile, ii) compare the captured EEG profile to each of the plurality of stored EEG profiles in the data storage device to determine if the captured EEG profile matches at least one of the stored EEG profiles, and iii) if there is at least one matching stored EEG profile, retrieve the at least one keyword associated with the at least one matching stored EEG profile, d) at least one keyword information data storage device operatively connected to the at least one processor, the keyword information data storage device storing information relating to various keywords; and e) wherein when at least one keyword associated with the captured EEG profile is retrieved, the at least one processor is further operable to: i) connect to the at least one keyword information data storage device, ii) conduct a search at the at least one keyword information data storage device using the at least one retrieved keyword as a search constraint for information related to the at least one retrieved keyword, iii) if related information is located, obtain the related information associated with the retrieved keywords, and iv) present the related information using an output device.