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The majority of on-line billing companies (www.clickbank.com,
www.ccnow.com, www.ccbill.com, www.ibill.com, etc.)
works in the following way:
Merchant subscribes with such company ( for free or for some fee)
and receives an account on the server of this company.
Then he specifies in this account the prices and URLs of the finish
pages on which users will be directed after money transfer is made.
Then he makes links to the on-line billing server from the Web page
from which he would like to sell his goods. ( in our case this is the
page for membership subscription). When user clicks on this link
he will be directed to the on-line billing server which returns
the form for the submitting credit card information. Then the server makes
credit card verification and if everything is okay it directs
user to the finish page that is specified in the merchant account.
After some period on-line billing company sends to the merchant
money check ( or makes money transfer on the bank account) on
which all on-line payments during this period are collected.
Our script works with www.clickbank.com company but other
companies can be used as well. The main useful feature of the www.clickbank.com
is that after transaction the server returns receipt number
of the transaction by GET method with URL of the finish page.
Our cgi script that saves the receipt number
for further user verification is placed on the finish.
If on-line billing company you prefer does not send receipt
number by GET method with URL of the finish page, our script
has other options for effective (and secure) fee based membership
subscriptions.
If you are admin and use method that differs from mentioned above for
accepting membership payment, you can make money transfer in your way
and then manually submit membership information (password, login,
membership period, services allowed, etc.) via Web based interface to
the membership database.
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