As mobile phones become ubiquitous and the split between PCs, personal digital assistants, mobile phones and other mobile devices become blurred, the second security information is handled by this device and the device itself becomes increasingly important. This book covers various aspects of safety for mobility, including current developments, the underlying technology, network security, mobile code problem, security and future applications. Also available: Digital Signal Filtering, Analysis and Restoration - ISBN 9780852967607 ATM: the broadband telecommunications solution - ISBN 9780852968154 Institution of Engineering and Technology is one of the world's leading professional society for engineering and technology community.