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 kit-bash a shortwave radio.
You must always choose a specialization in Technology,
even though you possess some skill in multiple fields.