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How to Protect Your Cryptocurrency from Hackers? Hot & Cold Crypto...

We talk a lot about personal security and privacy when it comes to electronics. But nowadays, there’s a new area that we should focus...

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What is PTZ (Pan-Tilt-Zoom) Camera?

Pan/Tilt/Zoom or PTZ camera is a 360 degree angle rotating surveillance camera. Often used in surveillance, CCTV systems. Such cams are usually more expensive,...

What are TV Lines?

Essentially, TVL or TV lines are how resolution was measured before digital video recorders appeared on the market. Nowadays cameras and older monitors use...