On Tue, Apr 01, 2008 at 12:47:45AM +1300, Peter Gutmann wrote:
> Actually there are already companies doing something like this, but they've
> run into a problem that no-one has ever considered so far: The GTCYM needs a
> (relatively) high-bandwidth connection to a remote server, and there's no easy
> way to do this.

You can get a fairly high-bandwidth channel with 2D barcodes. It's
uni-directional, but that's enough for many useful scenarios. The data
gets shown on the PC monitor and is captured by a ubiquitous
camera-phone or a dedicated locked-down device. This approach avoids
the problems you mentioned about USB/Firewire/Ethernet lockdown.

Disclosure: I work for a company, Cronto, which makes a product based
around this technology -- http://www.cronto.com/


w: http://www.cl.cam.ac.uk/users/sjm217/

The Cryptography Mailing List
Unsubscribe by sending "unsubscribe cryptography" to [EMAIL PROTECTED]

Reply via email to