CEREBRO

Invented by Professor Xavier himself, since the earliest days of its creation, Cerebro was thought to be the ultimate means with which to catalogue and track genetic anomalies anywhere in the world. Constantly sweeping the globe by piggy backing pre-existing satellite projections, this ultimate mutant detector is sensitive to aberrations in electromagnetic brain wave activity most often attributed to biological mutations. Whether due to the prolific increase in the range of mutations over recent years, environmental deteriorations such as the erosion of the ozone layer, or the improbable event of orchestral machinations of any number of sboteurs, the X-men have become painfully aware of Cerebro's limitations. While the computers interactive headpiece is more easily wielded by psi-sensitive mutants, Cerebro is also friendly to non-mutants with proper training.
The X-Men have used Cerebro throughout the years to track missing teammates, find newly manifested mutants, and even for security in tracking the grounds. It was through the use of Cerebro that Professor Xavier located both the original and second team of X-Men. Once, only telepaths could use Cerebro, but Shadowcat modified the machine a few years ago so that anyone with proper security clearance could use it. It still performs best when used by a psi, however.
Cerebro is outfitted with security measures as well, being set up for only certain people with proper security clearance to use. This is enforced through the finger pads (reconfigurable for other races) which conduct expressive body-field measurements that identify individuals. The Lo-Res antenna info plus the finger field sensor input is monitored throughout Cerebro use- any irregularities could be a sign of deception or psi intrusion.