Computer Screen Photo assisted Technique

The trivial observation that computer monitors can be programmed to display millions of different colours has led to the development of an experimental technique based on the simultaneous use of a standard computer screen as a controlled light source, and a digital camera, such as a web camera, as an imaging detector for the evaluation of diverse optical properties of chemically sensitive substances. The first demonstration of this concept was published back in 2003 [28], and the technique was nicknamed as Computer Screen Photo-assisted Technique (CSPT). 

Pilippini D, Di Natale C, Paolesse R, D Amico A, Lundstrom I (2007) Computer screen photo-assisted techniques for global monitoring of environmental and sanitary parameters. Sens Actuators B 121 93-102... 

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