[Cryptography] Kindle as crypto hardware

[Russ Nelson]

John Gilmore writes:
 > What ever happened to those old Java-rings or iButtons with the 1-wire
 > interface?  They were designed for almost exactly this application.
 > (Touch the ring to a point on a device or wall, it authenticates or
 > decrypts.  No UI beyond that, except for initial programming.)

They cancelled the product, but still have information about it on
their website:
http://www.maximintegrated.com/products/ibutton/jibkit/javaringfaq.cfm

There are some for sale on EBay right now, $29 "More than 10 available".

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