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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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DTMF (Dual Tone Multiple Frequencies)

A system used in touch-tone telephones. DTMF assigns a frequency to each key for easier identification. In spy world for example, DTMF technology is...

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...