Like the rest of infrastructure, the Internet will eventually seem to disappear by becoming ubiquitous. Most access will probably be via high-speed, low-power radio links. Most handheld, fixed and mobile appliances will be Internet enabled. This trend is already discernible in the form of Internet-enabled Cell Phones and personal digital assistants. Like the servants of centuries past, our household helpers will chatter with one another and with the outside help.
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The interceptable nature of wireless signals and the limited memory and computing power of most handheld devices leaves wireless systems dangerously vulnerable to data theft.
无线信号的可截取本质以及大多数手持设备有限的内存和计算能力，使无线系统极易受到数据窃贼的攻击。
Most handheld devices have their own standards to deliver data over data channels.
大多数手持设备有它们自己的标准用来在数据通道上传送数据。
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