Using low-cost technology, experts from the Valle de Teotihuacan University Center of the Autonomous University of the State of Mexico (UAEMEX) are working to identify people by distributing nerves in the palms of the hands.
José Francisco Solis Villarreal, full-time professor of this university space, indicated that the distribution of veins in the palms of the hands is a biometric to identify people that could be used in areas such as banking security or passenger control. at airports. ,
He said that for this it is necessary to obtain information through a multispectral camera. “Our visual ability allows us to see wavelengths ranging from 400 to 700 nanometers, while the information we work with is around 900 and a thousand nanometers, which is not visible to the human eye, but which can be detected. with a spectral camera, which also allows the detection of temperature differences”.
The head of the SEP-registered academic body “Research in Computing” explained that in their research they do not detect folds, i.e. what is on the surface of the skin and temperature difference. Nerves occur in relation to the tissue around them.
This information, he pointed out, is unique to each individual and allows us to effectively identify an individual. One of the advantages of this biometrics is that to be identified, the person whose information is read must be alive due to the detected temperature.
He pointed out that this type of work has a history, but the limitations of work on the subject are economics, i.e. cameras with better detail or higher resolution tend to be a relatively new and very expensive. “We’re talking about cameras that can cost between $4,000 and $40,000.”
For now, said Jose Francisco Solis Villarreal, we are working with a multispectral camera whose estimated value was 50,000 pesos, with a very cheap sensor, very simply, a CCD-charge-coupled device, which these In despite not having to precisely get the types of wavelengths we are able to implement well.
Right now, he said, multispectral camera technology is laboratory, not commercial; It is applied in satellites or military technology, for example, to identify oil or mineral deposits. However, sometimes when its cost drops, it will be seen entering a smartphone app or a car.
They noted that, for example, for fingerprint recognition, a high resolution lens is needed, as it is necessary to see the smallest layers of the skin surface; However, the sensor is much cheaper as it operates on the visible spectrum and there are a large number of commercial and low cost options. “In addition, the distance to the object from the optical system and the lens is short, and there is another kind of processing in the information.”
It should be noted that researchers David Martínez Martínez and Oscar Espinoza Ortega, as well as experts and students from the Polytechnic University of Tulsingo, also participate in this research work.
(Photo: Special Portal)