Graeme Wall wrote:
In message
Andrew Yarnwood wrote:

I have a proposal for dealing with (punishing) people who make loud
business phone calls on trains (or any other public transport). ("I'm
on the train ... buy! ... sell!")




I recall someone on this group[1] commenting that he overheard one of his
firm's competitors talking about a major contract in such detail on the train
that his company were able to trump the loudmouth's tender.


There are mobile phone jammers available from electrical retailers, but
they cost up to £200.

Still, it would be worth the money just to watch the misery on the
callers face as they try and figure out why their call keeps cutting
out.

Try http://www.globalgadgetuk.com/yo50.htm