What does TCPA / Palladium do, in ordinary English?
It provides a computing platform on which you can’t tamper with the applications, and where these applications can communicate securely with the vendor. The obvious application is digital rights management (DRM): Disney will be able to sell you DVDs that will decrypt and run on a Palladium platform, but which you won’t be able to copy. The music industry will be able to sell you music downloads that you won’t be able to swap. They will be able to sell you CDs that you’ll only be able to play three times, or only on your birthday.
All sorts of new marketing possibilities will open up. There will be remote censorship: the mechanisms designed to delete pirated music under remote control may be used to delete documents that a court (or a software company) has decided are offensive – this could be anything from pornography to writings that criticise political leaders.
Software companies can also make it harder for you to switch to their competitors’ products; for example, Word could encrypt all your documents using keys that only Microsoft products have access to; this would mean that you could only read them using Microsoft products, not with any competing word processor.
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