With most of the iPhone's "easter egg" secrets having already been discovered and parsed to the Nth degree by geeks everywhere, the smartphone continues to harbor one little-known but incredibly useful capability: a hidden serial port.
And so a "jailbroken" iPhone armed with a serial port connector becomes a thing of beauty for one IT worker: an entire computer that can be whipped out of pocket to do mainframe troubleshooting in a pinch. I can see most network engineers perking up at the notion of being able to rely on just their phones in the server room, rather than being chained to a laptop or remote terminal...
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