Finally, I have a way to lock my 13-inch MacBook Pro with Retina display to a heavy metal chair, thanks to the PNY ThinkSafe MacBook Locking System (MSRP of US$29.99, generally available for less than $20).
Back when I got my first 13-inch MacBook Air shortly after they arrived on the scene on January 29, 2008, I was thrilled about the design -- it was thin, light and quiet. But there was one thing that bothered me -- there was no Kensington lock slot on the side or back of the device that I could use my lock with to anchor it to hotel furniture. Since then, my solution has been either to lock the MacBook Air in a hotel safe (that actually worked very well with the 11-inch Air I bought later) or carry it with me everywhere.
Fast-forward to 2013, when my employer bought me a nice 13-inch MacBook Pro with Retina display. While it's speedier than the Air and has much more capacity and screen real estate, it's also heavier and thicker, and I really don't like to carry it around. In keeping with Jony Ive's seeming dislike for little slots that can be used with locks (the new Mac Pro is missing one as well), the MacBook Pro is also slot-free. I had to find a solution that would work for travel...
One of my cohorts pointed me toward MacLocks, but I had two problems with that solution. First, they were charging $59.99 for the product and second, it required screwing a case to my MacBook Pro. No, I don't personally own the MBP, so there's no way I was going to remove screws and then attach a case to it.
The only other solution was the PNY ThinkSafe MacBook Locking System. What it uses in place of the Kensington slot or a case screwed onto the MacBook Pro is a thin, curved, hardened stainless steel band that snakes down into the opening between the keyboard and the screen. There are actually three bands included with the MacBook Locking System -- one for MacBook Air, one for MacBook Pro and one for MacBook Pro with Retina display. A small drawstring bag to wrap up the cable, lock and band is included with the system.