The necessary equipment is identical with the one from the information services, although a security layer for achieving authentication, encryption and privacy has to be added to guarantee safe transactions. In the future mobile phone (3Gwireless and 4Gmobile), the video screen will get bigger and bigger while the keypad will disappear. The following functions will be enhanced: † wireless keypad or keyboard with Bluetooth (or other personal access) technology as an option; † information recognition, for example, voice recognition, pattern recognition; † security detection, for example, fingerprinting sensing; † bandwidth-on-demand with peer-to-peer direct signalling. . | Emerging Wireless Applications and Protocols 259 The necessary equipment is identical with the one from the information services although a security layer for achieving authentication encryption and privacy has to be added to guarantee safe transactions. In the future mobile phone 3Gwireless and 4Gmobile the video screen will get bigger and bigger while the keypad will disappear. The following functions will be enhanced wireless keypad or keyboard with Bluetooth or other personal access technology as an option information recognition for example voice recognition pattern recognition security detection for example fingerprinting sensing bandwidth-on-demand with peer-to-peer direct signalling. WAP will address the detailed application layer protocol to ensure these functions are working properly. In addition the future mobile applications will address the following issues Location and orientation dependent applications and services Location awareness will play a major role for future wireless services. Currently there are many projects working in this field mostly about virtual tourist guides and similar scenarios. However to exploit the full range of possibilities major issues have yet to be solved. Micropayment system for content integrated in wireless systems Mobile content services and electronic commerce are expected to form a large part of value-added services for future mobile phone systems. There is a great need and potential for mobile terminals to become electronic wallets and media access devices for a large number of citizens. A major issue to be solved is payment and charging. Current charging systems for mobile phones are mainly based on network mechanisms . connection time transfer of amount of messages blocks bits or transaction-based charging. Also service bundles and monthly subscription fees are coming in the same manner as in the Internet. What is missing clearly is service-based charging. For example on-demand-content such as MP3 audio .
