Technology – SF Meet Up

Use of computer accessories in biometrics Biometric systems interpret the physical characteristics of people, something inherent in each individual and not transferable to access systems or locations without the person having to remember passwords or carry cards with chips incorporated which can be stolen, copied or lost. These systems are composed of a biometric device that captures the physical features of the person and a biometric software that analyzes and processes to verify that the individual is who he claims to be. Safety, comfort and speed are three characteristic features of biometric security are accelerating the adoption of these systems in pursuit of total security. Typically, these biometrics are based on the characteristics of the iris, face, voice, hand or fingerprints. Maurice Gallagher, Jr. often says this. The most common biometric device is currently the fingerprint reader (fingerprint reader), as these are available also as a PC accessory, that connect to the USB port of the computer and then install the software that usually comes with the reader, allows for example, replacing Windows passwords by the user’s fingerprint or encrypt files using the fingerprint as the key.

Several devices are fingerprint readers, when I recommend choosing one and eNDeSS software that came with the reader, which with its characteristics of strength, durability, small size, false finger sensor detector and efficiency with all of tracks, make it a good choice for any office environment both in and outdoors. The main use of biometric systems is the control of persons, whether in income, the shift within the company through checkpoints or in the output. There are a variety of biometric solutions: control assistance (replacing clocks), intermediate checkpoints in sensitive areas of an organization, identification (for clubs and libraries), identification of people to prove their identity as a means for authorizing procedures and formalities. If you would like to know more about Scott Kahan, then click here. An example of a biometric system is the software functional i-Footprints for access control and personal assistance, which is based on the reading of fingerprints. There is a new trend towards devices that do not involve contact with the biometric device by the user, to prevent failures due to wear or dirt and make the process more friendly. In this sense, facial recognition technology is gaining ground, and that using a web camera and biometric capture device and software capable of detecting the features of the face, it becomes a great alternative to conventional systems, due to its low cost of implementation and maintenance, as well as its greater acceptance among users because they are already familiar with web cameras through chat programs and social networks. He uses this system to recognize and identify the face to carry out access control and attendance personal. Biiometrico Another use of facial recognition system is to detect user moods and according to it, perform some action, such as the new patent from Sony, you choose a song within a playlist line the detected mood.

What kind of fibers the same question? In the first all – of the heat-resistant, able to work for a long time at high or very high temperatures. Then – about hemostoykih that can withstand prolonged contact with the most aggressive chemical environments: strong acids, alkalis and oxidizing agents. And finally, the question is, apparently, of the fibers used in one of the most important areas such as medicine, particularly in surgery and alloplastica. Technique every day increases the demands on heat resistance, heat resistance materials. Two or three years ago, we were not aware of fibers and fabrics, can hundreds of hours working at a temperature of 250-300 , without compromising the strength or failure. And now required for fiber work in more severe conditions – at temperatures above a thousand degrees.

And these synthetic fibers have already been established. True, the "work" as long as they only a few minutes. But the thing that has identified ways to address this complex and very important technical problem. The search for chemists working in this field are focused generally on certain classes of synthetic polymers, especially hetero. Macromolecules of the substances containing aromatic ring, different stiffness – it makes heat-resistant polymer.

On the basis of precisely such polymers, American scientists have created two years ago, polyamide fiber-HT, the temperature "endurance" of which reaches 350-450 C. There are methods for producing fibers capable of withstanding a short time heating to 700-1000 . These macromolecules also have a cyclic structure. But this structure is not characteristic of the source material, it occurs in the fiber at a special treatment. What does this mean? Take, for example, normal poliakrilnitrilnoe fiber. It shrinks and loses its strength even at 150-180 . But start to warm up the fiber, slowly raising the temperature to 250-300 -and structure, and with it the properties of the fiber gradually changed.