Device limitations
Wireless is convenient and often less expensive to deploy than fixed services, but
wireless is not perfect. There are limitations, political and technical difficulties that
may ultimately prevent wireless technologies from reaching their full potential. Two
issues are incompatible standards and device limitations.
As mentioned previously, in North America there are two standards for digital
cellular service. Internationally, there is at least one more. A device using PCS
IS-136 will not work in an area where the deployed technology is PCS IS-95. Also
mentioned previously is the inability to use Bluetooth and 802.11 in the same
device. These are just two examples of problems that arise when industrywide standards
do not exist. The lack of an industrywide standard holds the technologies back
from delivering one of the true ideals of wireless: ubiquitous access to data.
Device limitations also restrict the free flow of data. The small display on a
mobile telephone is inadequate for displaying more than a few lines of text. In addition,
most mobile wireless devices cannot access the vast majority ofWWW sites on
the Internet. The browsers use a special language, wireless markup language
(WML), instead of the de facto standard HTML.
Most likely, no one wireless device will be able to meet every need. The potential
of wireless can be met but not with a single product. Wireless will succeed
because it will be integrated into a variety of devices that can meet a variety of needs.
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