Patent ID: 6744874
Filing Date: 2004-06-01
Classification: H04M

Abstract:
A method of universal communication, comprising:(a) assigning a plurality of user phone numbers each representing a user in a communication system; (b) establishing user verification and user digital signature service of a private keyâ€”public key pair algorithm in a database system; (c) providing a handheld personal communication device for user verification and user digital signature to each user, which will store data and programs for performing user verification and for performing digital signature by said private keyâ€”public key pair algorithm. and provide input and output means for user verification and user digital signature; (d) establishing binding relation between the user phone number and the physical phone number of a communication device in said database system; whereby a people oriented communication system is established to replace the location oriented communication system; whereby a common interface is established for various physical communication systems which makes possible the cooperation and independent development of said physical communication systems; whereby a general user identification and signature service is provided.