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Wearable Lie Detector

Build Yourself a Superpower
Wearable Lie Detector
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Contributors (1)
Published
Nov 04, 2019

Imagine that we no longer need to strap someone into a polygraph set up to run a test that could be manipulated and beat.

Imagine that we live in a society where there is full transparency with every intention.

Imagine that you could wear glasses that signal every mention of a lie.

<p>From the Purple Hyacinth comic, where the protagonist has the superpower of detecting lies (in red)</p>

From the Purple Hyacinth comic, where the protagonist has the superpower of detecting lies (in red)

Inspired by a comic, recent events, and personal stories, a pair of lie-detecting glasses could be built some time in the near future, utilizing improvements of existing technologies.

Current polygraph technology:

“The machine first registers the baseline of your vital signs. Examiners then trick you into lying by asking you a series of "control" questions…As soon as the examinee tells such a white lie, it puts a blip on the polygraph machine that serves as a signature of that examinee's lies…The polygrapher scores the test by comparing physiological responses (breathing, blood pressure, heart, and perspiration rates) to the probable-lie control questions with reactions to relevant questions... In essence, an examinee's lie only counts as a lie if it registers as more of a lie than his or her control lie.”

Downside? The test could be cheated

“Change your heart rate , respiratory rate, blood pressure and sweat level while answering control questions… By comparison, your answers to the relevant questions will seem true.”

How do we improve upon this?

  • Extensive set of control data

    • Historical data: as personal data are increasingly logged onto digital devices (such as Health app, Fitbit), there will be extensively recorded heart rate, respiratory rate, blood pressure, and sweat level for each person

    • Look up of data: as one person approaches another, the glasses detect the other person’s identity and look up their historical data

  • Real-time monitoring of physiological responses

    • The glasses monitor the other person’s physical activities while they talk. The monitoring will be new technology & in a compact form - perhaps similar to x-ray scans (that will have to be safe to wear)

  • Real-time scanning of neuron activities

    • New technology and some wishful thinking: perhaps by this time we will have figured out if there is a certain type of neuron activity that indicates lying. If that is the case, the glasses will continually scan for such activities and signal when the pattern is detected

<p>Hopefully the lie-detecting part can be an add-on to any glasses. Here is one design of a pair of glasses</p>

Hopefully the lie-detecting part can be an add-on to any glasses. Here is one design of a pair of glasses

Once a lie is detected, it will flash on the lens and is only perceptible to the wearer. The signal will stay for a second. The glasses will need to be charged to power its activities.

Caveat

It DOES NOT detect the objectiveness of truth - only one’s intentions. So if someone thinks it is correct to say 1 + 1 = 3, the lie detector will not pick that up. This circumvents the “is there only one objective truth” debate, especially in politics and where data is involved.

Source on polygraph: https://www.livescience.com/33512-pass-lie-detector-polygraph.html

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