A method of universal communication, comprising: (1) assigning user phone numbers each representing a user; (2) providing user verification and user digital signature service; (3) providing a handheld personal communication device for user verification and digital signature; (4) dynamic binding of a user phone number to a physical phone number by a database. A universal communication system comprises a handheld personal communication device as the controller for each user, a database system as the intelligent center, and communication adaptors. As a result of the separation of the user phone number from the physical phone number and the related verification and digital signature service, a common interface is provided for various physical communication systems. This allows the various physical communication systems to develop independently and at the same time work together to meet the ever increasing communication demand. This also allows service providers to develop convenient, secure, and cost-effective services. Therefore, a people oriented universal communication system is provided with flexibility, scalability, security, affordability, and efficiency.