One thing that distinguishes it, from the article, is that it doesn't mount the machine's hard drive.
Anyone can do essentially what they're doing just by using a live CD. They've gone a bit beyond that by not mounting the hard drive as noted, and whatever other changes they've made that the article doesn't specify.
Anyone can do essentially what they're doing just by using a live CD. They've gone a bit beyond that by not mounting the hard drive as noted, and whatever other changes they've made that the article doesn't specify.