Green Laser Scan

In a very brief scene, Theo walks through a security arch on his way into the Ministry of Energy. After waiting in queue, he walks towards a rectangular archway. At his approach, two horizontal green laser lines scan him from head to toe. Theo passes through the arch with no trouble.

childrenofmen-002

Though the archway is quite similar to metal detection technology used in airports today, the addition of the lasers hints at additional data being gathered, such as surface mapping for a face-matching algorithm.

We know that security mostly cares about what’s hidden under clothes or within bodies and bags, rather than confirming the surface that security guards can see, so it’s not likely to be an actual technological requirement of the scan. Rather it is a visual reminder to participants and onlookers that the scan is in progress, and moreover that this the Ministry is a secured space.

Though we could argue that the signal could be made more visible, laser light is very eye catching and human eyes are most sensitive at 555nm, and this bright green is the closest to the 808 diode laser at 532nm. So for being an economic, but eye catching signal, this green laser is a perfect choice.

Advertisements

Children of Men: Overview

When it was released, Children of Men seemed a fanciful dystopia. Today with its depictions of environmental blight, terrorist bombs, refugee-phobia, and a militarized police state, it seems uncomfortably prescient. The film is sci-fi, but it doesn’t lean heavily on the use of interfaces for its storytelling. So while it will be only a handful of reviews, let’s celebrate the 10th anniversary of this dark film with some nerdy analysis.

Release Date: 05 January 2007 (USA)

ChildrenofMen_title.png

Plot

In the year 2010, humanity suddenly suffers from global infertility. Most of the world is thrown into chaos, but Britian soliders on under military rule. Refugees in this society are considered a threat to the nation, and they are routinely rounded up and deported or killed.

In 2027, one member of this society, named Theo Faron, is dutifully trudging on with his life when he is kidnapped and taken to meet his estranged wife Julian, now the leader of a secretive and militaristic refugee-rights organization. She convinces him to use his relationship to his powerful cousin Nigel to arrange transportation papers for a young woman. When Theo delivers the papers, he learns that the young woman, named Kee, is pregnant. Shocked at this symbol of hope, he protects her from a society that hates her, a government that will kill her, and the refugee-rights organization who wants to use the child for their own ends, escorting her at great personal cost to a fabled boat that can protect and nurture her and her child and thereby the future of humanity.