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Pentagon laser that can ID via heartbeat

Frankly, from the pov of a biologist I doubt this will work. The mechanism detects turbulence patterns in the blood. But so many factors influence the mechanics of blood flow: hormones and certain illnesses as well as age render blood vessels thinner along the wall and/or clogged on the inside), aneurysms will alter the blood current patterns and some medication (blood thinners, for example) will alltogether alter the way the blood's flowing behaviour. An injury and the resulting scar or a few blocked capillaries (for example with diabetics) can also change the blood flow and consequently the turbulence patterns in the flowing blood.
Also - faint hearted men continue reading at your own risk! - women who are pregnant or have their period will have different flow patterns from day to day and thus register false signals. The same goes for females suffering from endometriosis or cysts and for both genders that have any other growths that change the blood flow physically.
When we get older, the Valvulae Venosae (my appologies - I couldn't find out what they are called in English, so I must use the medical term) start to slacken which we notice when the blood remains in our legs and can't be pumped upwards again. This, too, changes the currents in the blood and the laser will not recognize the person anymore.

There are too many variables to be taken into consideration for such a device to work with the required accuracy.
 
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rhubarbodendron said:
Frankly, from the pov of a biologist I doubt this will work. The mechanism detects turbulence patterns in the blood. But so many factors influence the mechanics of blood flow: hormones and certain illnesses as well as age render blood vessels thinner along the wall and/or clogged on the inside), aneurysms will alter the blood current patterns and some medication (blood thinners, for example) will alltogether alter the way the blood's flowing behaviour. An injury and the resulting scar or a few blocked capillaries (for example with diabetics) can also change the blood flow and consequently the turbulence patterns in the flowing blood.
Also - faint hearted men continue reading at your own risk! - women who are pregnant or have their period will have different flow patterns from day to day and thus register false signals. The same goes for females suffering from endometriosis or cysts and for both genders that have any other growths that change the blood flow physically.
When we get older, the Valvula Venosa (my appologies - I couldn't find out what they are called in English, so I must use the medical term) start to slacken which we notice when the blood remains in our legs and can't be pumped upwards again. This, too, changes the currents in the blood and the laser will not recognize the person anymore.

There are too many variables to be taken into consideration for such a device to work with the required accuracy.
Click to expand...


Your spelling was almost spot on ... Congrats.

I'd agree with that and the fact heartbeats can change with varying health conditions or exertion, people doing heavier work then just plain relaxing or regular things. This sounds cool but highly impractical. But hey it's tax dollars at work hey?
 
almost? Oh dash it, did I overlook one again?
I'd appreciate tax dollars to do some work that benefits the tax payer. But I'm afraid that's an utopia in pretty much every country.
 
oh right! The context requires the plural and I used the singular. Does it count as a mitigating circumstance that my last Latin lesson was 35 years ago? ;)
 
Please don't worry! I didn't for a moment consider your comments a complaint. Not being a native speaker I wholeheartedly appreciate it when people alert me to spelling errors. Only an error pointed out is an error to be avoided in the future :beer:
 
I can see the problem that some things could alter turbulent flow and hence you would end up rejecting a person's identity incorrectly. But, perhaps a benefit of this approach is that it would be difficult to fake someone else's turbulent pattern. So, perhaps this protects against impersonation. This could be combined with other approaches to make it harder for someone to impersonate another person.
 
that's an excellent point I had completely overlooked.
I'd not use that laser for military purposes, though. It'd be an excellent instrument for cardiologists. If used at a close range it might be helpful in detecting obstacles to the blood flow. It'd save gazillions of lives if a thrombus could be detected before it causes a stroke, heart failure or lung embolism.
 
More intrusive:
www.smithsonianmag.com/innovation/device-can-hear-voice-inside-your-head-180972785/
https://www.sciencealert.com/neuros...-an-entirely-new-form-of-neural-communication

Scientists think they've identified a previously unknown form of neural communication that self-propagates across brain tissue, and can leap wirelessly from neurons in one section of brain tissue to another – even if they've been surgically severed.

Quantum news
www.scientificamerican.com/article/qutrit-experiments-are-a-first-in-quantum-teleportation/
 
I have to wonder if something like this would be able to predict an oncoming heart-attack. It sounds like if it's looking at the blood flow that it'd be theoretically possible.
 
On spacedaily.com is an article about a metasurface laser that can produce super chiral light.

One line says that perhaps you can turn a screw just by shining a light on it...
 
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