Apple's personal assistant AI, Siri has something to say about Google Glass. When you speak Google Glass' activation phrase "Okay, Glass!" to Siri, its reply reads as: "I think that Glass is half empty, [your name]." Notice that it capitalizes G. We tried "Xbox, On!" with Siri on our iPad to no funny avail.
Apple's bid on wearable technology is the iWatch, a smart-watch that can hide under your coat sleeves, and doesn't wrap around your head like Geordi's visor, or a Borg implant (depending on which Trek gadget you find more apt). Its limited screen real-estate would mean Siri would play a big role in iWatch's success.