Design

Some more detail on the design of the system.

Useful ideas

Grouping moles into 'constellations', like stars, may make them easier to identify
Splitting the body into regions for separate consideration will make it easier to manage large numbers of moles
Supporting incrementally and partially updating the mole catalog and histories will mean that they can be updated in sessions. This may mean the difference between being able to do 10 minutes every day and having to spend a couple of hours each month for a full update.
Simply maintaining a count of moles in a particular region may be a useful minimum effort for mole management
Support for voice commands and audible feedback may make difficult to capture regions more managable
Being able to filter moles and regions that require assistance to capture will make sessions more productive, as less skipping will be involved

Create a new catalog
Add moles to the catalog which the user already knows to be new to the catalog
Update the catalog, searching for moles on the skin that may be new to the catalog; without relying on the user's knowledge. Update partially, so that the user doesn't have to cover the whole body in one session.
Archive a mole from the catalog that is known to be excised, record pathology results
Query the catalog, to see if a particular mole is new
Capture a detailed image of a particular mole to it's history, compare with previous images to look for significant changes.
Browse the history of a particular mole, to look for significant changes
Capture new detailed images for the histories of moles, searching for moles on the skin that may have significant changes. Update partially, so that the user doesn't have to cover the whole body in one session.
Browse the detailed histories of moles, looking for significant changes that may have been previously overlooked

Important features:

Properties to capture:

A simplified anatomy for approximately identifying mole locations with commonly used terms: