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Bokeh
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==Other applications== In 2009,<ref>{{cite web |last=Fildes |first=Jonathan |url=http://news.bbc.co.uk/1/hi/technology/8170027.stm |title=Barcode replacement shown off |work=BBC News |date=2009-07-27 |access-date=2012-02-19 |archive-date=2022-12-07 |archive-url=https://web.archive.org/web/20221207051739/http://news.bbc.co.uk/1/hi/technology/8170027.stm |url-status=live }}</ref> a research group at [[MIT Media Lab]] showed that the bokeh effect can be used to make imperceptibly small barcodes, or [[bokode]]s. By using barcodes as small as 3 mm with a small lens over them, if the barcode is viewed out of focus through an ordinary camera focused at infinity, the resulting image is large enough to scan the information in the barcode.<ref>Mohan, A., Woo, G, Hiura, S, Smithwick, Q, Raskar, R. [http://web.media.mit.edu/~ankit/bokode/ Bokode: Imperceptible Visual Tags for Camera Based Interaction from a Distance] {{webarchive |url=https://web.archive.org/web/20090730073705/http://web.media.mit.edu/~ankit/bokode/ |date=July 30, 2009 }}. ACM SIGGRAPH 2009.</ref>
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