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.