for example, you can use it to check if your local mall offers wifi, so you can sit in the parking lot and browse the net LEGALLY, other places like airports, cafes, etc these days offer wifi for free, and you can use this device to find those cafes.
on the other hand, those idiots with wifis set up SHOULD SET UP passwords to begin with. and when you use their conection with out permission, its illegal.
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actually its only illegal when you THINK illegal.
for example, you can use it to check if your local mall offers wifi, so you can sit in the parking lot and browse the net LEGALLY, other places like airports, cafes, etc these days offer wifi for free, and you can use this device to find those cafes.
on the other hand, those idiots with wifis set up SHOULD SET UP passwords to begin with. and when you use their conection with out permission, its illegal.