Just like there are advantages for organizations using SmartDust, there are also some disadvantages. For example SmartDus technology runs in very high power consumption, and the battery can last as few as a couple of hours. SmartDust is commonly used in the military to track enemy movement 24/7. Therefore SmartDust with low battery duration will not be very useful for surveillance.
The picture above is an example of a SmartDust that can detect a intrusion within a parameter of 50 meters. It is one of the cheapest and smartest on the market at around 25 cents.
click on the link below to learn more about the limitations of SmartDust
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