Nothing needed. (Score 0)

I used to do the computer tournaments for a gaming convention.

We had staff members who were security for the con but no specific precautions taken for the computers. For a couple the years we setup on the main floor and then started doing the computer gaming in separate room we could lock when not in use.

Computers, monitors, CD cases, and power strips had stickers with the owners name on them.

Between a staff member being present and self-policing we never had anything stolen.