He'll need to be jamming you at this point, as a broken window or opened door would normally release the alarm.

2016年12月四级真题（第一套）阅读 Section B

It's easier to find and acquire jamming equipment for some frequencies than it is for others.

2016年12月四级真题（第一套）阅读 Section B

Jamming concerns are nothing new, and they're not unique to security systems.

2016年12月四级真题（第一套）阅读 Section B

Other systems also seem confident on the subject of jamming.

2016年12月四级真题（第一套）阅读 Section B

simpli Safe was singled out in one recent article on jamming, complete with a video showing the entire system being effectively bypassed with hand-held jamming equipment.

2016年12月四级真题（第一套）阅读 Section B

simpli Safe, winner of our Editor's Choice distinction, utilizes a special system that's capable of separating incidental RF interference from targeted jamming attacks.

2016年12月四级真题（第一套）阅读 Section B

So, too, would the motion detectors in your home, so the thief will need to continue jamming once he's inside and searching for things to steal.

2016年12月四级真题（第一套）阅读 Section B

That approach will eliminate most cord-cutting concerns—but what about their wireless equivalent, jamming?

2016年12月四级真题（第一套）阅读 Section B

Then, he's going to need to know the technical details of your system and acquire the specific equipment necessary for jamming your specific setup.

2016年12月四级真题（第一套）阅读 Section B

wireless security providers will often take steps to help combat the threat of jamming attacks.

2016年12月四级真题（第一套）阅读 Section B

with the right device tuned to the right frequency, what's to stop a thief from jamming your setup and blocking that alert signal from ever reaching the base station?

2016年12月四级真题（第一套）阅读 Section B