It's one of the more plausible sci-fi series I've seen. We can probably expect something along the lines of the glasses soon enough.
I'm currently in the middle of episode 22, and I agree that the change from lighthearted exploration of the technology into a melodramatic story with very mystical treatment of it is a bit disappointing. Suddenly Fumie gets 8 seconds per episode and there's magical runes and alchemical circles and ghosts and bullshit everywhere.
Still cool though.