Interesting suggestion, but the Pen Director is provided by Anoto, not by Objectif Lune.

PlanetPress does not communicate directly with that Service. PlanetPress Workflow only receives the PGC's provided by the Pen Director, and that PGC does not contain battery level information.
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Technical Product Manager
I don't want to achieve immortality through my work; I want to achieve immortality through not dying - Woody Allen