Innovations: Creepy or useful: When Retail Employees Start Recognizing You With Google Glass

What a boon for urban missionaries of any faith.

They'll greet you by name and know all about you as they try to sell their truth to you....Deity must be talking to them....

Tesco in the UK are already trialing a system that identifies customers by facial recognition as they enter the store. This will allow them to send targeted adverts to your smartphone as you shop.

The use of location-based advertising based on customer identity is one thing that Hollywood has gotten pretty close to right, I think. Most other visions of the future are limited by the present.

We'll be connecting our brains to the internet within a couple decades, and won't need displays of any kind.