[4] The Free Software Foundation explicitly forbade tivoization in version 3 of the GNU General Public License.
The FSF subsequently developed a third version of the GNU General Public License (GPLv3) which was designed to include language which prohibited this activity.
[11] Stallman and the Free Software Foundation attempted to respond to some of these concerns by stating that the GPLv3 allows private digital signatures for security purposes while still preventing tivoization.
[citation needed] In the third and fourth discussion drafts of the GPLv3, released March 28, 2007 and May 31, 2007, respectively, the anti-tivoization clause was limited so as not to apply when the software is distributed to a business.
The final, official GPLv3 was published on June 29, 2007, with no major changes in respect to tivoization relative to the fourth draft.
[13] However, he still does not support relicensing the Linux kernel under GPLv3, stating that:[14] Stallman calls it "tivoization", but that's a word he has made up, and a term I find offensive, so I don't choose to use it.
Whether that means "booting only a specific kernel" or "sharks with lasers", I don't care.The GPLv3's new license provisions were acknowledged by TiVo in its April 2007 SEC filing: "If the currently proposed version of GPLv3 is widely adopted, we may be unable to incorporate future enhancements to the GNU/Linux operating system into our software, which could adversely affect our business.