>> std 110 outlet at each seat would help a lot.

> As in: "Leave your batteries at home"?

As in

    "Electrolyse water right at your seat at 3am ...",
    "Generate chlorine right at ...",
    "Make things really really hot ...",
    "Charge up the high value capacitors built into your shoes and 
clothing ..."
    "Energise you local electric fences ..."
     ... .  *

(At present you can to go to the toilets and use the energy sources 
there to do these things, so it would be no great change, but N people 
could do it at once at locations which were most convenient.

FWIW some airlines, within the last year, still handed out full sets 
of metal utensils at meal times.

A relatively wimpy electric fence in the right place at the right 
time, especially if unexpected, could be a very useful means of 
keeping you separated from people who didn't like your face during 
certain important periods.

A few distributed farads charged to a few hundred volts could make 
manual restraint difficult or provide an 'unarmed' person with certain 
compelling advantages.

The largely unprobable internal volume and necessary electronic 
content of a laptop seem likely to make it a proscribed item in due 
course. A modern high duration lithium ion battery, (and things which 
look like them but largely aren't),  is quite large and probably 
essentially XRay opaque. If it contained material which shielded 
fields liable to resonate certain high energy chemical bonds, 
especially if the shielding was highly selective and tailored to 
specifically appropriate bonds, then it's likely this could be made 
relatively non-apparent. As long as one had ?Dave or equivalent along 
with suitable surrogate substances on his hands at the same time as a 
confounder one should be able to be adequately 'safe'.



        RM

* some / most of these sound pretty bizarre to me.
Other things which used to sound bizarre are now accepted as viable 
'tools' without murmur.



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