The Tools of Lifelogging

Zeo ($399)A monitor records brainwaves and charts the patterns and quality of each night's sleep. A Web service helps users optimize their Zs.

Bodybugg ($199)Calorie-counting system mounted on an armband. It estimates energy burned; user has to record food consumption and upload it to the Web.

Livescribe ($149-$199)A digital pen that turns notes and sketches into image files. It also records the sound of conversations, meetings, and lectures.

Fujitsu ScanSnap Scanners ($300-$500)Copies important documents by turning them into digital files. Text-recognition software makes them searchable.

Data: BusinessWeek

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