Video and audio surveillance

Now a days surveillance mostly based on electronics. You don’t need to be in the same room or even same building to be able record sound, video or even both. It is quite simple to even track objects worldwide. Electronics advancing everyday as well as prices on electronic gadgets. Spy camera that was only in fiction decade ago now is very affordable to everyone. All gadgets shrink in size and price, battery life increasing at the same speed almost monthly. Anyone wishing to get some

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