Frodo’s Sword “Sting” glows blue when he’s in the presence of Orcs.
Yep. Lord of the Rings. You might be wondering why I’m posting this - but it’s a great example of a glanceable, “magical” ambient interface. It’s what David Rose (Founder of Ambient Devices and Vitality) uses to help describe GlowCaps - the network enabled medicine lids that glow to remind patients to take their medicine.
He calls them enchanted objects.

