Looney Tunes predicted this years ago only it is 13 years late. "Smell-O-Vision Replaces Television: Carl Stalling Sez It Will Never Work!" (The Old Grey Hare 1944 Warner Bros.)

You can go a couple degrees warmer than in the "old days" (ten years ago). Things like bearings in fans and drives will fail. Capacitors will fail. Data centers produce LOTS of heat. I don't believe that the coin counters figured in the staff to replace the failed parts or the extra staff and time needed when manual procedures are used due to a downed system.

Not just Windows on a desktop. Ancient versions of RedHat and other Linux distros. Handheld devices with WinXP Embedded. Software that needs .NET 1.1 (and will not run if any newer versions are installed). Web interfaces that need JAVA 1.5 (or older) Web interfaces that need IE 6.

You have never had to deal with the ego of a doctor. Quarantine and isolation work fine if they sign the orders for a patient. A computer is a computer as far as they are concerned.

The October 2012 edition of Nuts and Volts magazine has just such a project. If you are lucky it is at your news stand now. You can use the "deer cam" as others have suggested. You could also use a Canon Power Shot digital camera in a water tight box with the "updated" firmware. Go to: http://chdk.wikia.com/wiki/CHDK and see what they have to offer. This software DOES NOT harm your camera or modify it. The "hack" is removed when you remove the SD card. You can get used Power Shot cameras on eBay for sub $50. You then place this in a wooden "bat box" or similar item with a small window. You want it to be water proof and obscure. Big battery pack (possibly solar charged) may be useful.

I am an IT guy and tested a similar product. They claimed we could "eliminate changing passwords" by using their "how it is typed" software. They set us up a test page, signed in many times a day until I had "trained" it to my way of typing my password (something like 100 times). I then sent my account information to my coworkers and invited them to attempt to login to my account. Within ten minutes of sending the challenge Email I had a screen shot of my compromised account. Needless to say the sales guy didn't make a sale.

It will be embedded into the hardware, just like the Intel processor serial number. Remember that? Or the yellow dots that are printed on every color printer to identify the printer by serial number, date and time of printout etc. Try scanning currency with a scanner, just see what happens. Intel Serial Number http://www.geek.com/glossary/P/psn-processor-serial-number/ Yellow Dots http://www.washingtonpost.com/wp-dyn/content/article/2005/10/18/AR2005101801663.html Scanning Currency http://www.wired.com/politics/security/news/2004/01/61877