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Chapter 18. PDAS AND THE NETWORK > Working Offline and Online

Working Offline and Online

PDAs are designed primarily for offline "on the road" computing. However, PDAs outfitted with a modem or cellular connectivity technology can connect to a service provider and access e-mail or the Web (or the corporate network through a Virtual Private Network—discussed in Chapter 17, "Networking on the Run" —or a private Web site) and can even synchronize with a PC through a remote connection.

Now having said all that concerning remote connectivity, in most cases the PDA is still going to be used as a standalone device. Data can be referred to, edited (or deleted), and added to. Then when the device is synchronized with a desktop computer, new information is added to the application database that holds that particular kind of information. For example, a salesperson might sync his handheld device (a Palm, for example) to his e-mail application on his PC. He can then read e-mail messages that he has been unable to get to while on the road.


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