So THAT'S what it takes to change the boss's mind!

It's the 1980s, and this office building's elderly security guard has just retired. But the building's owners decide to replace the human being with an all-electronic system, according to a pilot fish on the scene.

"We never knew how lucky we were," fish says. "That guard knew everybody in the building and would send the couriers to the correct floor every time. Ah, the good old days.

"With the new system, to get into and out of the building there were keypads you used to input a PIN code. When entering, the keypad was on the outside of a double-door porch area, and when leaving, it was inside the lobby."

Another tricky bit: After hours, the building alarm goes off if either of the front doors is unlocked for more than a few seconds. So getting in or out means entering the PIN, unlocking the door, going through, relocking it, unlocking the other door, going through and locking it again.

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