Me and the Mrs recently had cause to go along to a private hospital. In the reception there was an unattended booth (open door), in which there was a desk, a chair, miscellaneous boxes... all manner of general clutter. And on the desk was a HP Vectra attached to a huge CRT, on which impenetrable data was scrolling. I estimate the Vectra to be at least 20 years old. Leaving aside the issue of security, I was genuinely fascinated to try and understand what the hell it was doing, but we got called for our appointment so didn't have a chance to penetrate their security properly; we went there several times and the booth was always open to anyone to just wander in.