The second post in Ed Felten’s series on Digital Rights Management is now up: DRM Wars: Property Rights Management. A taste:
The second trend I identified in the talk was toward the use of DRM-like technologies on traditional physical products. A good example is the use of cryptographic lockout codes in computer printers and their toner cartridges. Printer manufacturers want to sell printers at a low price and compensate by charging more for toner cartridges. To do this, they want to stop consumers from buying cheap third-party toner cartridges. So some printer makers have their printers do a cryptographic handshake with a chip in their cartridges, and they lock out third-party cartridges by programming the printers not to operate with cartridges that can’t do the secret handshake.
Doing this requires having some minimal level of computing functionality in both devices (e.g., the printer and cartridge). Moore’s Law is driving the size and price of that functionality to zero, so it will become economical to put secret-handshake functions into more and more products. Just as traditional DRM operates by limiting and controlling interoperation (i.e., compatibility) between digital products, these technologies will limit and control interoperation between ordinary products. We can call this Property Rights Management, or PRM.
Good stuff!