GPLv3 are not restricted by hardware constraints on the modification of distributed software. This new license provision was acknowledged by TiVo in its April 2007 SEC filing: "we may be unable to incorporate future enhancements to the GNU/Linux operating system into our software, which could adversely affect our business". CableCard Support Uncertainty (USA) In September 2020, the Federal Communications Commission (FCC) changed its rules so that cable television providers no longer must support CableCard. Providers may choose to keep supporting CableCard, but TiVo owners have no assurance. The cable television provider may discontinue CableCard support at any time. See also TiVo digital video recorders References External links Digital video recorders Interactive television Linux-based devices Products introduced in 1999 Television terminology Video storage Television time shifting technology