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Universal authentication device for use over telephone lines 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H04M-011/00
출원번호 US-0221273 (1994-03-31)
발명자 / 주소
  • Akhteruzzaman (Naperville IL) Hazra Amitava (Holmdel NJ)
출원인 / 주소
  • AT&T Corp. (Murray Hill NJ 02)
인용정보 피인용 횟수 : 123  인용 특허 : 0

초록 ▼

This invention relates to a universal authenticator for use with an ordinary telephone station over an ordinary telephone line. The authenticator, which is the size and shape of a credit card, receives a query number by being held against the receiver of the telephone station and receiving audio sig

대표청구항 ▼

Authentication means comprising: means for automatically transmitting audio signals over a voice telephone line, said line connected via a telephone network to an authentication system, said means for transmitting arranged for transmitting by having a user of said authentication means hold said mean

이 특허를 인용한 특허 (123)

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