A live direct or indirect view of a physical, real-world environment whose elements are augmented (or supplemented) by computer-generated sensory input such as sound, video, graphics or GPS data. By contrast, virtual reality replaces the real world with a simulated one.With the help of advanced AR technology (e.g. adding computer vision and object recognition) the information about the surrounding real world of the user becomes interactive and digitally manipulable.
Handheld display AR promises to be the first commercial success for AR technologies. The two main advantages of handheld AR is the portable nature of handheld devices and ubiquitous nature of camera phones. The disadvantages are the physical constraints of the user having to hold the handheld device out in front of them at all times as well as distorting effect of classically wide-angled mobile phone cameras when compared to the real world as viewed through the eye.
Radio Frequency Identification (RFID)
“RFID” stands for Radio Frequency Identification. An RFID tag is a microchip which is packed with a antenna on a microscale, the size and packaging is structured to allow the RFID tag to be attached to various objects. When a reader (on a mobile phone) comes into the nearby vicinity the tag’s antenna picks up signals from an RFID reader or scanner and then returns the signal.
RFID technologies are now also implemented in end-user applications in museums. e.g. "eXspot," at the Exploratorium, a science museum in San Francisco, California. A visitor entering the museum received an RF Tag that could be carried as a card. The eXspot system enabled the visitor to receive information about specific exhibits. Aside from the exhibit information, the visitor could take photographs of themselves at the exhibit. It was also intended to allow the visitor to take data for later analysis. The collected information could be retrieved at home from a "personalized" website keyed to the RFID tag.
RFID devices being employed by Vodafone in Wellington, New Zealand on bus shelter posters.
The idea:
-Point your bluetooth enabled phone at the poster and wait until the animated arrow on the poster changes from red to green.
-Follow the instructions to download a free gift.
Near field communication (NFC)
is the set of protocols that enables smartphones and other devices to establish radio communication with each other by touching the devices together or bringing them into proximity to a distance of typically 10 cm (3.9 in) or less.
e.g. NFC Card emulation mode enables NFC-enabled devices such as smartphones to act like smart cards, allowing users to perform transactions such as payment or ticketing.
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