The present invention can be implemented in {HEAD ~ a manner} to allow operational monitoring and {TAIL ~ control} of networks , vending machines, electronic mail , electronic commerce , electronic business , payment for goods and services, delivery of goods and services, and advertising worldwide 
The present invention can be implemented in { HEAD ~ a manner } to allow operational monitoring and { TAIL ~ control } of networks , vending machines , electronic mail , electronic commerce , electronic business , payment for goods and services , delivery of goods and services , and advertising worldwide
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