Apologies if this story made it to FT in September '07, but a search didn't find it. I saw the link today in an article about the MacBook Air incident:
http://vivara.net/blog/?p=61
Yesterday I flew out of Rapid City, SD as part of some work I’m doing. I was in the security line when I heard my name paged.
This crack security staff was digging through my bag. They were concerned because I brought a microcontroller programmer:
Actually, it wasn’t just the programmer, it was the 1 ohm resistor I had spliced in series with the power lead to measure current, and the 10 second RC filter I had placed across that to give my DMM a better chance of reading the average current.
“Sir, this is an improvised electronic device. You will never be allowed to fly with this.”
I responded to many questions with information about my occupation, circuit theory up to and including Ohm’s law, and a discussion of the market for bicycle power meters. But they still would not let me fly with the programmer. I had to leave it behind.
I was finally able to fly out ten hours later, with a brand-new-in-the-box MSP430 programmer. Apparently, it’s not “improvised” if it comes in a printed box.
(For the non-electronics folks: RC is resistor-capacitor (components typically found on every circuit board), and DMM is digital multimeter, a common tool to measure voltage, current, etc.)
Was this just another case of TSA harassment, or are "improvised" electronic devices actually prohibited? As an aside, if so, why are they not on the list?
Those of us in electronics-related fields may often travel with custom or modified electronics. I've flown a couple of times with modified laptops and/or home-made circuit boards, none of which have ever elicited even the ETD swab and visual inspection that I would expect. But maybe I've just been lucky.
To me, this is yet another case of TSA overstepping their bounds. If it looks suspicious, please run an ETD test and do a visual inspection. But if it's not on the prohibited items list, not a weapon, and not an explosive, let the passenger go on his way. Just because you don't know what it is doesn't mean it is banned. Anything else is ridiculous.