Welcome to the new wiki, and happy holidays! If you can afford to help us out, you'll find a link HERE to where you can make a small donation. This is a community project (details here), and we depend on readers like you to keep this wiki free and available to everyone.

Head chip

From Tardis Wiki, the free Doctor Who reference

The head chip was the "type one" brain chip, a data gathering device used to access screens, available for 100 credits aboard Satellite Five by the year 200,000. Inserting into the back of the human skull, the head chip was small enough to be invisible, causing no scarring. Beyond that was the "type two" infospike. (TV: The Long Game)