Johnathan writes “Now that volume 4 of MAKE is hitting newsstands, I have posted my article from volume 3: “DIY Security Bits”. Figured it might be a good way to give blog readers more of a taste of the magazine content (though the existing sample PDFs are obviously the first stop for that.) The article details a method for making your own security bits for tamperproof screws, whose drivers are often ridiculously priced and just as ridiculously scarce.” Link.