ShotCode
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ShotCode pointing to Wikipedia's page on ShotCode |
Shotcode is circular barcode from OP3, which uses bulls eye in center and datacircles around it. Databits are read from datacircles with switching angle in certain radius from centerpoint. Idea behind circular barcodes is that they can be read with cheap low quality cameras like webcams or mobile phone cams on realtime. Shotcodes advantages over other mobile phone readable barcodes is to be readable without sharp focus or from low res output. It also have ability to detect it's reading angle. Although ShotCodes do not have any information in it, (compared to
matrix barcodes) this is not necessary. ShotCodes link the camera phone to the right URL and the internet holds all the info one needs.
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 cams, 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.
* http://www.shotcode.com/ official ShotCode homepage by OP3
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List of phones which are supported by ShotCode reader*
Create your own ShotCode (free for private use)*
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*
Using visual tags to bypass Bluetooth device discovery, Mobile Computing and Communications Review, Volume 9, Number 1, 2005 (by SpotCode people)
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SpotCode in action videos from University of Cambridge
