Several different strategies could be used to sense and classify the
location and action context needed for the Memory Glasses application.
For the prototype MIThril implementation, we chose to use a tag-based
approach that allows the sensing of both location and
interacting-with-person-X context. This tag-based approach has the
advantages of being simple to implement, low-power, reliable, and
computationally inexpensive. The disadvantage is that it requires
that all interior locations, objects, and people of interest be
tagged.
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