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Illegal? Over the past few weeks I've seen sincere companies selling them (from what I saw on their website).
I'm not talking about those circuits which block any cell phone signal. I can imagine those are illegal but not the ones which only detect them.
As you might know, cell phones are...
Thanks shanren.
I know those litlle devices. Very often they are made of a single coil or a small led or whatever with a particular gas in it that gets ionised and it lights up.
I was more looking for some serious hardware which can detect mobiles even when they are not transmitting. They are...
GSM detection
Hello
Can someone please give me some pointers on mobile phone detection? I'm looking for some text files or whatever which explains how these thingies work. Circuit designs are welcome as well.
Many thanks.
Shaggy
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