8. The first mobile device of claim 7 , wherein the instructions further cause the computer processor to: associate supplemental information with the new note created in the dietary log, wherein the supplemental information comprises at least one of an image of the physical object, information derived from the image of the physical object, wirelessly received information, a machine readable code associated with the physical object, information based on the machine readable code, or contextual traits related to the physical object.
7. A first mobile device comprising: a computer processor; and a memory containing instructions that, when executed, cause the computer processor to: scan a machine readable code attached to a physical object, the machine readable code including data identifying a food item; retrieve, using the data identifying the food item, nutrition data corresponding to the food item; associate the nutrition data with a new note created in a dietary log to yield an updated dietary log; sharing the updated dietary log with a second mobile device; and categorizing the updated dietary log based on the food item.