Technology
The Technology Knowledge represents a broad acumen with electronics, computer hardware, and devices more elaborate than “machines,” which fall under the Crafts Skill. If it has a processor, a transistor, or an integrated circuit — if it’s electronic rather than electrical — manipulating it uses the Technology Knowledge. This is the wide-ranging Ability used to build one’s own computer, install (or subvert) a security system, repair a mobile phone, or kitbash a shortwave radio. You must always choose a specialization in Technology, even though you possess some skill in multiple fields.