Search Cloud Provider June 19, 2012 June 25, 2012,
Volume 172, Issue 4
"Not too many decades ago, computers were easy to secure because they came in their own large well-guarded rooms. The "high priests" of the computer room would take in punch cards at the glass window control point, and as long as the paper holding the code was not folded, spindled or mutilated, it might be read by a Hollerith reader and run on the machine. Only one program ran at a time. Of course if your code had a bug in it, it would be rejected from the room to be debugged hours or days later when the high priests gave it back..."