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ipoki es un servicio de internet gratuito, que permite compartir tu posiciòn con tus contactos y hacer seguimiento(tracking) con una pàgina web y una aplicaciòn para telèfonos mòviles con gps

utiliza còdigos QR "quick response" `de dos dimensiones de ràpida respuesta..

explicaciòn en inglès de QR
A QR Code is a matrix code (or two-dimensional bar code) created by Japanese corporation Denso-Wave in 1994. The "QR" is derived from "Quick Response", as the creator intended the code to allow its contents to be decoded at high speed.

QR Codes are common in Japan, where they are currently the most popular type of two dimensional codes. Moreover, most current Japanese & Nokia mobile phones phones can readOverview
Although initially used for tracking parts in vehicle manufacturing, QR Codes are now used in a much broader context, including both commercial tracking applications and convenience-oriented applications aimed at mobile phone users (known as mobile tagging).

QR Codes storing addresses and URLs may appear in magazines, on signs, buses, business cards or just about any object that users might need information about. Users with a camera phone equipped with the correct reader software can scan the image of the QR Code causing the phone's browser to launch and redirect to the programmed URL. This act of linking from physical world objects is known as a hardlink or physical world hyperlinks.

Users can also generate and print their own QR Code for others to scan and use by visiting one of several free QR Code generating sites.

this code with their camera.

http://en.wikipedia.org/wiki/QR_Code

Many new camera phones have the ability to read barcodes very much like a store price-scanner. In this minute long tutorial, you will find out how to turn your phone into a code scanner.



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