According to a recent news summary in _Innovation Weekly_, biometric technology is advancing rapidly enough that we can expect to see mobile phones that will enforce security rules.John Gehl and Suzanne Douglas wrote:"Two scientists at Carnegie Mellon University are developing technology that one day may be capable of sensing when you're just too busy to take a phone call. The technology uses tiny microchips, cameras and sensors to analyze body language in order to determine whether a person is engrossed in a task. Pounding away at a computer keyboard, closing your office door, or conversing animatedly with another person would all serve as possible indicators that a person is too occupied to take a call."This kind of automated interpretation of human motivation and intentions sends shivers up my spine. The potential for error and abuse is limitless. We have already seen countless examples of assumptions made by system designers turning out to be faulty; my favorite is the Windows Update, which by design has no user controls over it at all. Once activated, it - like the sorcerer\u2019s apprentice\u2019s brooms - cannot be shut off or even slowed down in its relentless, 12-times-an-hour checking for Windows updates. Once it\u2019s been set in motion, the only way to control the Update is to remove the software entirely.Well, imagine the innumerable situations in which the tiny microchips, cameras and sensors could make a mistake in analyzing human needs. Let\u2019s start with controlling cellular phone abuse. Can't you just imagine someone designing a feature in mobile phones that whispers in the earpiece, "Lower your voice - you are talking too loudly in public about corporate information." Then the phone shuts off if you ignore it - right in the middle of a critical discussion of response to a potentially disastrous breach of security at the corporate data center.Or how about, \u201cYou are driving at 20 miles per hour over the speed limit in heavy traffic: don\u2019t you think it would be wise to STOP TALKING ON YOUR PHONE?\u201d Whereupon the driver actually does get shot by the maniac who has been stalking him for the last 10 miles because his phone call to the police was interrupted by proxy by a programmer who designed the safety system without an override.For real nightmares, I leave you to imagine a phone that monitors your speech to ensure compliance with a designer\u2019s standards of politically correct speech. I imagine what such a device might do with peculiar words and phrases that have one meaning in ordinary discourse but a quite different meaning in a different context. For example, I remember one conversation with a system manager 20 years ago when I was on tech support for HP. He had had just had a system crash, and I routinely asked, \u201cDid you take a dump?\u201d There was a long pause on the phone line, and the system manager replied with obvious puzzlement, \u201cYessss, but what does that have to do with the computer?\u201d \u201cNo, no, \u201c I said, \u201ca CORE dump!\u201dMore seriously, the same technology might lend itself to identification and authentication for computer access. For example, software might identify authorized users by face, keyboard rhythm and voice and thus decrease the rate of both false positives (accepting an interloper) and false negatives (rejecting the rightful user). But in all cases, we should be very careful to insist on safety overrides that maintain control by the human being on the spot, not by the human being who thought he or she could predict all possible situations and limit human response in advance. For example, an authorized user could have a secondary authentication method that could allow access even in the case of a false negative.In any case, I hope that enthusiasts of remote control will remember the road surface of the highway to hell.