Mobile phones have transformed telephony profoundly.
They are equipped with functionalities which surpass telephony
needs, and which inspire the development of
value-added mobile services, the use of mobile phones as
access devices, and mobile commerce in general. The number
of mobile phones in use far exceeds any other technical
devices that could be used to market, sell, produce, or deliver
products and services to consumers. These developments
open lucrative opportunities to merchants and
service providers.