Pager
A pager is a small telecommunications device that receives (and, in some cases, transmits) alert signals and/or short messages. This type of device is convenient for people expecting telephone calls, but who are not near a telephone set to make or return calls immediately. A typical one-way pager fits easily in a shirt pocket; some are as small as a wristwatch. Sophisticated one-way pagers can display short text messages.
Password cracker
A password cracker is an application program that is used to identify an unknown or forgotten password to a computer or network resources. It can also be used to help a human cracker obtain unauthorized access to resources. Password crackers use two primary methods to identify correct passwords: brute-force and dictionary searches.
M-commerce
M-commerce (mobile commerce) is the buying and selling of goods and services through wireless handheld devices such as cellular telephone and personal digital assistants (PDAs). Known as next-generation e-commerce, m-commerce enables users to access the Internet without needing to find a place to plug in. The emerging technology behind m-commerce, which is based on the Wireless Application Protocol (WAP), has made far greater strides.
Nomadic computing
Nomadic computing, another name for mobile computing, is the use of portable computing devices (such as laptop and handheld computers) in conjunction with mobile communications technologies to enable users to access the Internet and data on their home or work computers from anywhere in the world. People using such a system are sometimes referred to as technomads, and their ability to use that system as nomadicity.