V Rajaraman is with the Jawaharlal Nehru Centre for Advanced Scientific Research and the Indian Institute of Science, Bangalore. Several generations of scientists and engineers in India have learnt computer science using his lucidly written textbooks on programming and computer fundamentals.

In this article we will discuss payment by cash for e-commerce transactions and micro payments for services received via the internet.

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Address for Correspondence
V Rajaraman
IBM Professor of Information Technology
JNCASR Bangalore 560 064, India.
Email: rajaram@serc.iisc.ernet.in