Nowadays, modern wireless technology has become a very important part of our life. Can you imagine the world without all the smartphones, tablets, mobile Internet and other portable gadgets? We often use them, and these portable devices ar…

UHF and VHF low frequency bands (140-180 MHz, 450-480 MHz), which are used by many of the electronic devices we use every day, even without thinking about it, for example, safety intercoms. Two-way radios talk to each other through your ne…

A single well-placed GPS jammer or spoofer could disrupt signals in an entire region of the United States, an official from the Homeland Security Department told a GPS conference in Nashville, Tenn. At the same time, the U.S. still “lacks …

映画のようにピンホールカメラを使ってあなたを覗いている人のことを詮索しているのですか？そして、彼らはあなたがスクリーンから他の部屋で何をしているのかを見ることができます。 ピンホールカメラの覗き見を避けるためには、ピンホールカメラの仕組みを…