Laser Prototype Improves Bomb Detection

angry tapir writes "Scientists at the University of New South Wales (UNSW) in Australia have developed a prototype laser device capable of detecting tiny traces of explosive vapor, an invention that has the potential to put bomb sniffer dogs out of a job. The prototype – a pulsed, quantum laser-based, cavity ring-down spectrometer – is being tested at the US government's Los Alamos National Laboratory in New Mexico."

Comments

I need glasses...

[Hagaric]

I clicked on this thinking it said "Laser Prototype Improves Bomb Detonation" and am disappointed..

Re:I need glasses...

[Anonymous Coward]

Yeah, now legitimate, law-abiding gun owners can be arrested and labeled as terrorists for attempting to board an airplane after going to the gun range several days earlier.

Anything that sensitive could cause problems

[gstoddart]

As with anything like this, the more sensitive you make it, the more you might have to deal with false positives.

I can only imagine someone going around bumping into people at the airport making sure they all smell like something which will trigger something like this.

It wouldn't be anything more disruptive than suddenly loads of people in the airport get checked for bombs, but I bet you could terribly mess up an airport if you suddenly had a handful of people testing positive.

Of course, to be going around doing this you'd need to smell of bomb residue and probably be seen on surveillance cameras doing it. But for all I know some common household chemicals could cause this now.

Re:Anything that sensitive could cause problems

[Sarten-X]

Of course, to be going around doing this you'd need to smell of bomb residue and probably be seen on surveillance cameras doing it.

That doesn't matter. What matters is that you can deposit a chemical on a large number of others who have a high probability of going quickly to an airport security check. You never need to go near the sensors yourself.

One easy exploit is to rig a aerosol dispersal into a car's exhaust, then drive through a departures drop-off area a few times. Alternatively, contaminate the air around a rental car return. If the airport is one of those with significant public areas outside the secure area, a purse with an occasionally-puffing atomizer will be practically unnoticeable. Better yet, disguise the purse-riding atomizer as a wallet, and confess to coming to the airport in the middle of a pickpocketing spree. Bonus points if the pickpocketing is also staged for the benefit of cameras.

Taking another easy route, we could assume that contact's necessary to spread the scent to a person. That's also easy enough to accomplish. How many countertops, queue barrier posts, and restroom faucets are in an airport? With a small team of pre-contaminated guests with many complaints and small bladders, a barely-noticeable compound can be spread to hundreds of unsuspecting participants easily.

And with that, I'm probably now on yet another list...

Re:Anything that sensitive could cause problems

[Sarten-X]

It hasn't happened because it doesn't need to yet. I hate being one of those guys who says the terrorists have already won, but the terrorists have already won. An aspect of American daily life is interrupted by a constant reminder of how we pissed off somebody else. Once the privacy advocates fight enough, and enough time has passed to calm the politicians, the ridiculous security theater will relax... then there will be another incident to remind us that we will never be safe, and never really were.

The only way to return to normal convenient-yet-insecure life is to let attacks happen with no reaction, but that goes against human instinct.