"self-tuning" guitars

Hi ALL, according to this report, tuning tech catches on with
guitarists, and "self-tuning" guitars are available:

http://news.com.com/Tuning+tech+catches+on+with+guitarists/2100-1027_3-6014002.html?tag=nefd.top

http://tinyurl.com/ar2qz

"Self-tuning" tanpura-s (Indian drones) are available,but I have yet
to come to like them. And, of course, a tanpura, unlike a guitar, has
only four 'strings'.

Regards,
Haresh.