A key feature of MapMerge is the overlay that people wearing NowSpecs can experience. Information and advertising related to wherever they look will be useful and rewarding for all parties.

Such overlays are not a new concept, so here are some thoughts about deeper connections between MapMerge and the Internet of Things.

• Thermal sensors can relate the density of people in a building
• The internal heat of a nightclub
• The coolness of a fridge selling Coke or sushi
• The availability of Apple Watch 3.0 in the Apple Store you are walking past
• The identification of the drone flying overhead
• The level of bacteria in an alleyway
• The speed of the serve at the tennis match you are watching from the grandstand
• The direction in which the most single people of the opposite sex presently are