That's not really a valid argument is it! In the grand scheme of things it was only a few years ago when we didn't have cars, or electricity, or a myriad of other stuff and we also survived!
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Does someone make a blocker to jam i-pods? They would be very popular on the trains.
:D nice answer!
Many, many years ago, I made one to block transistor radios on trains. I built a small tuneable RF oscillator into a cigarette packet (so that it wasn't obvious) and would tune it to the station (if the person was listening to it at a very loud volume).
These days some people have their iPods running so loudly you can hear them through their earphones.
One wouldn't use it to do a blanket suppression, merely on those who must let the world listen in to their conversation. Switch it on long enough to kill the call.
I've been on trips where a girl (it's always a girl) near me has spent the whole hour on the train on one call. Yes, I like hearing about your sex life and would like to join in. You know I'm jealous. :(