[harrystone]

I agree. Most people aren't smart enough to put down their phone even to save their own life. The guy has good intentions but some people just can't be saved.

[Fuxy]

Not to mention it's plain stupid.

What if there's actually a legitimate need to use a cell phone like a big car accident.

Or all the data connectivity some devices need for navigation.

If you want to jam signals jam it on your farm/house but keep it out of public range.

[iLoch]

Ahh, so the effectiveness of this devices is actually a matter of perspective...