ShotCode: Difference between revisions

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{{Short description|Type of polar matrix barcode}}

{{no footnotes|date=July 2012}}

[[Image:shotcode.png|right|Sample ShotCode linking to this article.|200px]]

'''ShotCode''' is a circular [[barcode]] created by High Energy Magic of [[Cambridge University]]. It uses a [[dartboard]]-like circle, with a [[Bullseye (target)|bullseye]] in the centre and ''datacircles'' surrounding it. The technology reads databits from thesethe datacircles by measuring the angle and distance from the bullseye for each point.

ShotCodes are designed to be read with a regular camera (including those found on [[mobile phone]]s and [[webcam]]s) without the need to purchase other specialised hardware. ShotCodes differ from [[Datamatrix|matrix barcodesbarcode]]s in that they do not store regular data - rather, they store a look up number consisting of 40 bits of data. This needs to link to a server that holds information regarding a mapped [[Uniform Resource Locator|URL]] which the reading device can connect to in order to download said data.

== History ==

ShotCode was created in 1999 at the [[University of Cambridge]] when researching a low cost vision based method to track locations and developed [[TRIPCode]] as a result. It has been used to track printed TRIPCode paperbadges in realtime with webcams. After that in Cambridge it had another research use; to read barcodes with mobile phone camscameras, and they used TRIPCode in a round barcode which was named SpotCode. High Energy Magic was founded in 2003 to commercialise research from the University of Cambridge Computer Laboratory and Laboratory for Communications Engineering. Least Bango.net, a mobile company used SpotCode 2004 in their ads. In 2005 High Energy Magic Ltd. sold the entire SpotCode IPR to OP3. Afterwards the name was changed from SpotCode to ShotCode. [[Heineken]] was the first company to officially use the ShotCode technology.

== ShotCode's software ==

The software used to read a ShotCode captured by a mobile camera is called ‘ShotReader’. It is lightweight and is only around 17kB. It ‘reads’ the camera’s picture of a ShotCode in real time and prompts the[[Web browser|browsers]] to navigate to a particular site.

There aren't updates or official software meant to be used neither by [[Android (operating system)|Android]] nor by [[iOS]] smartphones, since the last website update was from May 2007.

== See also ==

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==External links==

*{{Webarchive|url=https://web.archive.org/web/20130501092223/http://www.shotcode.com/|date=May 1, 2013|title=Official Shotcode website}}

*http://www.shotcode.com/ official ShotCode homepage by OP3

*[http://paginaspersonales.deusto.es/dipina/cambridge/PUC/PUCpaper.pdf Diego López de Ipiña , Paulo R. S. Mendonça , Andy Hopper, TRIP: A Low-Cost Vision-Based Location System for Ubiquitous Computing, Personal and Ubiquitous Computing, May 2002]

*[http://portal.acm.org/citation.cfm?id=1055959.1055965 Using visual tags to bypass Bluetooth device discovery, Mobile Computing and Communications Review, Volume 9, Number 1, 2005] (by SpotCode people)

*[http://www.cl.cam.ac.uk/Research/SRG/netos/uid/spotcode.html SpotCode in action videos from University of Cambridge]

*RoBCode Generator https://github.com/rbur004/svg_rob_code

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[[Category:Barcodes]]

[[Category:Computer-related introductions in 1999]]

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[[es:ShotCode]]