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Re:TSA: don't bring uncharged devices from oversea by efiftythree on Sunday July 06, 2014 @10:00PM (#7996625)
I think their premise is that a device which has been converted to a bomb large enough to cause total destruction of its target would have had the majority of its components removed thus rendering it non-functional. Following that "logic" a device which powers on has a much lower chance of being an explosive device.
Re:TSA: don't bring uncharged devices from oversea by Osiris on Sunday July 06, 2014 @10:03PM (#7996633)
That doesn't make sense. A simple x-ray would show that the internal components have been removed.
Re:TSA: don't bring uncharged devices from oversea by MBCook on Sunday July 06, 2014 @10:10PM (#7996651)
I believe the problem is that plastic explosives and a trigger mechanism look very similar to the cells and relegation circuitry in a NiMH or LiIon battery so an X-Ray can't really distinguish them.

What does this do to people with extra batteries? Do they all have to be charged? Would you have to put them in your phone/laptop to prove it?

Re:TSA: don't bring uncharged devices from oversea by elithrar on Sunday July 06, 2014 @10:33PM (#7996707)
> What does this do to people with extra batteries? Do they all have to be charged? Would you have to put them in your phone/laptop to prove it?

What about modern laptops that have multiple discrete batteries (i.e. modern Macs) - I would guess that you could remove 2-3 of the 4-5 packs and still have a "functioning" laptop, albeit with a much shorter uptime.

Re:TSA: don't bring uncharged devices from oversea by MBCook on Sunday July 06, 2014 @10:53PM (#7996777)
I would assume it's an effort/sophistication thing, just raising the minimum bar to weed out/discourage people and lessen the number of attempts in total.
Re:TSA: don't bring uncharged devices from oversea by efiftythree on Sunday July 06, 2014 @10:07PM (#7996644)
I'm certainly not trying to imply that it does. The TSA themselves have been attempting to use the excuse that their scans, x-ray or otherwise, are somehow incapable of detecting the difference between a real device and a modified one. I for one, having see many of these x-ray screens during travel, believe that is some kind of nonsense.

That said I think a possible interesting question to ask is whether or not a scanning system could be implemented that is able to determine whether a devices internal components have been modified based on scans provided my OEM's.

edit: spelling.

Re:TSA: don't bring uncharged devices from oversea by chrismcb on Monday July 07, 2014 @04:29AM (#7997695)
Because a raspberry pi is SOOO large...