DVDR Password Protection?

Does anyone know of any software that will password protect a DVDR? I don’t care about copy protection. I just want to lock down the media on the disk, not the whole drive of a particular PC.

I found one low-cost (under $30) solution: http://www.cryptcd.com

Roxio’s software have a built-in feature: http://www.roxio.com/en/support/kb/emc/ee7000002.jhtml

BTW, does Nero 6 OEM have a similar feature?