Well from that picture I think it looks pretty ugly and unsightly. Sorry, I like ideas like this that show an attempt to find a solution to a problem (true product design) but I think it could be improved quite simply. Have you considered options for reversing it, somehow having a flat stop on the top where you currently have the pad lock and moving the padlock and shackle so it ends up behind the screen?
The problem with Macs is people buy them because of their aesthetics (amongst other reasons), so a product designed for use with a Mac must complement those aesthetics.
That may sound harsh, but having done a degree in Industrial Design (yes thats true) I know that critique is essential but not always easy to receive.
Thank you for your comments. Unfortunately, the severe tolerances that help give the Airs their aesthetics also place severe limitations on cable-type security solutions. The type of “front entry” solution you suggest actually exists for 2010 and earlier Airs - it simply does not work for 2011 and 2012 Airs because of a much tighter hinge design. The opening necessary for placing a piece of material through the hinge exists for only a small angle of an opened air. The small acute angle that offers a maximum space in the hinge does not allow for a front insertion solution. The large rear obtuse angle (and only within a small range of angles) makes rear insertion possible. The device itself actually requires a complicated bend to fit in the Air - it is not a single bend, but rather a combination of several bends. As a professional engineer, with over thirty years experience, I can assure you the simple looking design is actually quite complex.
The MacAirLock is designed to serve as an impediment to the “grab and run” thief, or to deter the casual office of restaurant/coffee house thief. I usually remove the device when using my Air, although it does not obstruct the screen or prevent use of any keys.
Ugly is a rather extreme word, often in the eye of the beholder. However, I certainly respect your opinion. In the case of the MacAirLock, the trade off is some diminished aesthetics for some practical security. However, I certainly understand that any lack of aesthetics will disturb some people, especially MacBook Air owners. There is no perfect security solution for Airs. The MacAirLock works for what is is designed to do, but it is certainly not perfect, and for some perhaps, even “ugly”.