在线观看亚洲精品专区-在线观看亚洲免费-在线观看亚洲免费视频-在线观看亚洲欧美-欧美freexxx-欧美free嫩交video

VIP標識 上網做生意,首選VIP會員| 設為首頁| 加入桌面| | 手機版| RSS訂閱
食品伙伴網服務號
 
當前位置: 首頁 » 食品專題 » 生物名詞庫 » 生命科學總論 » 正文

Biometrics(生物統計學)

放大字體  縮小字體 發布日期:2006-08-28

u Biometrics:

Biometrics refers to the automatic identification of a person based on his/her physiological or behavioral characteristics. This method of identification is preferred over traditional methods involving passwords and PIN numbers for various reasons: (i) the person to be identified is required to be physically present at the point-of-identification; (ii) identification based on biometric techniques obviates the need to remember a password or carry a token. With the increased use of computers as vehicles of information technology, it is necessary to restrict access to sensitive/personal data. By replacing PINs, biometric techniques can potentially prevent unauthorized access to or fraudulent use of ATMs, cellular phones, smart cards, desktop PCs, workstations, and computer networks. PINs and passwords may be forgotten, and token based methods of identification like passports and driver's licenses may be forged, stolen, or lost. Thus biometric systems of identification are enjoying a renewed interest. Various types of biometric systems are being used for real-time identification, the most popular are based on face recognition and fingerprint matching. However, there are other biometric systems that utilize iris and retinal scan, speech, facial thermograms, and hand geometry.

A biometric system is essentially a pattern recognition system which makes a personal identification by determining the authenticity of a specific physiological or behavioral characteristic possessed by the user. An important issue in designing a practical system is to determine how an individual is identified. Depending on the context, a biometric system can be either a verification (authentication) system or an identification system.

u Verification vs Identification:

There are two different ways to resolve a person's identity: verification and identification. Verification (Am I whom I claim I am?) involves confirming or denying a person's claimed identity. In identification, one has to establish a person's identity (Who am I?). Each one of these approaches has its own complexities and could probably be solved best by a certain biometric system.

u Applications:

Biometrics is a rapidly evolving technology which has been widely used in forensics such as criminal identification and prison security. Recent advancements in biometric sensors and matching algorithms have led to the deployment of biometric authentication in a large number of civilian applications. Biometrics can be used to prevent unauthorized access to ATMs, cellular phones, smart cards, desktop PCs, workstations, and computer networks. It can be used during transactions conducted via telephone and Internet (electronic commerce and electronic banking). In automobiles, biometrics can replace keys with key-less entry and key-less ignition.

 
[ 網刊訂閱 ]  [ 食品專題搜索 ]  [ ]  [ 告訴好友 ]  [ 打印本文 ]  [ 關閉窗口 ] [ 返回頂部 ]

 

 
推薦圖文
推薦食品專題
點擊排行
 
 
Processed in 0.386 second(s), 18 queries, Memory 0.88 M
主站蜘蛛池模板: 35pao免费视频| 国产色妞妞在线观看 | 四虎影院在线播放 | 你懂的在线免费观看 | www.毛片在线观看 | 欧美成人在线影院 | 亚洲三级在线视频 | 日本三级成人中文字幕乱码 | 真实一级一级一片免费视频 | h视频在线免费 | 中文字幕亚洲天堂 | 亚洲成综合人影院在院播放 | xxxx性bbbb| 国产tube| 午夜cao| 日本三级香港三级人妇99 | 丁香五月网久久综合 | 艹逼免费视频 | 女人爽到喷水的视频大全在线观看 | 日日操免费视频 | 久久久久免费精品国产小说 | 久久久久国产精品 | 日本操穴 | 57pao成人永久免费视频 | 年轻护士3的滋味 | 在线免费视频手机版 | 91免费视 | 天堂最新版在线地址 | 免费人成网址在线观看国内 | 免费一级成人毛片 | 欧美射射射 | 亚洲狠狠色丁香婷婷综合 | 午夜福利国产一级毛片 | 51精品视频免费国产专区 | 色视频在线网站 | 伊人久久大香线蕉综合电影 | 天天插插插 | 新网球王子u17世界杯篇免费观看 | 韩国a级床戏大尺度在线观看 | 福利视频999 | 美女视频黄a全部 |