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: 色视频色露露永久免费观看 | 2级毛片| 日本在线www| 国产激情片| 免费鲁丝片一级观看 | 偷操| 男女视频在线观看免费高清观看 | 日本免费观看完整视频 | 日本久久久久久久 | 久久美女精品国产精品亚洲 | 欧美手机看片 | 日韩系列 | 丁香六月 久久久 | 五月婷激情 | 特黄特色的大片观看免费视频 | 久久女人网 | 激情五月综合网 | 久久精品综合网 | 全黄毛片| 天天操天天干天天干 | 乱码一区二区三区完整视频 | 一级在线观看视频 | 午夜伦理片免费观看在线 | 毛片色毛片18毛片美女 | 天天狠天天干 | 天天色综合久久 | 宅宅午夜亚洲精品 | 国产精品a在线观看香蕉 | a站在线观看 | 久久97精品久久久久久久看片 | 高清成年美女xx免费网站黄 | 99久久99久久 | 国产一级又色又爽又黄大片 | 一二三区在线视频 | 成年网站在线在免费播放 | 国内精品久久影视 | 久久精品国产亚洲aa | 深夜视频在线免费观看 | vvvv98国产成人综合青青 | 视频在线免费观看 | 91精品欧美激情在线播放 |