The present invention relates to a method of billing for commercial transactions over the Internet. 
The Internet is a vast worldwide interconnection of computers and computer networks.  The Internet does not consist of any specific hardware or group of connected computers, rather it consists of those elements that happen to be interconnected at any particular time.  The Internet has certain protocols or rules regarding signal transmission and anyone with the proper hardware and software can be part of this interconnection. 
At present, the technical and financial requirements for connecting directly to the Internet are beyond the resources of most individuals and thus new businesses known as Internet access providers have proliferated.  These providers invest in the equipment needed to provide access to the Internet for subscribers who pay the providers a fee for the access.  Providers include companies whose only business is to offer connection to the Internet, as well as on-line services such as Compuserve, American On-Line, and Prodigy.  In addition, telephone companies and cable television companies have announced plans to provide Internet access.  A party desiring to connect to the Internet by means of a provider typically connects via a modem over a telephone network to the provider's equipment which then connects the party, through the provider's equipment, to the Internet. 
Although the origin of the Internet was for military use, today the primary users of the Internet are civilian.  There is great activity at present attempting to utilize the Internet as a channel of commerce. 
Many vendors advertise their products and services over the Internet and solicit orders from Internet users for these wares.  While the preferred mode of payment is by credit card, there is great reluctance to transmit credit card account information over the Internet because of lack of security.  Moreover, in situations wherein the transaction amount is small—from pennies to a few dollars-it is not economically feasible to use a credit card transaction.  There is a need to be able to ensure that commercial transactions over the Internet are at least as secure as conventional transactions over the telephone, through the mails, and with on-line services where credit cards and/or billing accounts are used for purchases.  Similarly, there is a need to be able to handle on the Internet a large number of small-sized transactions, similar to what is done by telephone companies for conventional telephone service. 
The lack of security and the lack of a means to bill for small transactions are the biggest obstacles to commercial use of the Internet.