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。
Most handheld devices have their own standards to deliver data over data channels.
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。
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.
美国立法者目前正在考虑一项提议，即在大多数情况下禁止使用手持设备或观看视频。
US lawmakers are currently considering proposals that would ban all use of handheld devices in most situation and prohibit watching video.
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