
QUESTIONS · GROUND_TRUTH™
Everything we get asked, in one place.
Answers to the questions people actually bring us. Each one stands on its own, because most are read out of context - by someone in a hurry, or quoted back to us by a machine.
Bio_Sole is a smart insole that goes into an ordinary shoe and reads the way a person stands, bears weight, and moves. The reading stays in the sole. What crosses out of it is a yes or a no, never a copy of anyone’s body. We call that Known, Not Shown.
The list below runs from the plainest questions outward - what this is, the insole, the science of a walk, where the biometric stays, the AI, the standard we hold ourselves to, the regulatory position - and ends with what wellness practitioners and insurers ask us most. Every section of the site answers its own questions; this page is where they all sit together. If yours is not here, ask us.
Bio_Sole is a general wellness product. It does not diagnose, treat, cure, or prevent any disease or condition, and it is not a substitute for professional medical advice.
Questions people ask us.
What is Bio_Sole?
A smart insole that slips into an ordinary shoe and reads the way a person stands, bears weight, and moves. It confirms the person at the source, in their own shoe, with every step.
What is Ground_Truth™?
Trusted data about a person, anchored to proof of who they are. Everything begins with identity: verified identity produces Ground_Truth™, and Ground_Truth™ is trusted data. Wellness, work, recovery and sport are all built on that foundation.
What is Bio_Sole, and how does it relate to Ground_Truth™?
Bio_Sole International Group is the platform that makes Ground_Truth™ possible. Bio_Sole builds the smart insole and the architecture behind it; Ground_Truth™ is what that architecture produces.
Why was Ground_Truth™ founded?
To answer one question reliably: is this really the person? It began after our founder was asked whether the age-old problem of enemy impersonation could be solved, following an attack in which impersonators were indistinguishable from a legitimate military convoy.
What does autonomy from anatomy mean?
That your body authenticates itself and stays yours. The biometric never leaves your device, and what travels is only proof that a verified person is present, not anything about their body.
Does Bio_Sole need a special shoe?
No. It slips into an ordinary shoe, the one a person already owns and already wears.
What does the insole measure?
Pressure and motion at the sole: 58 sensels per foot with 6-axis inertial measurement, left and right in step, more than 50,000 points in 10 seconds of walking.
Does the client have to charge it or remember anything?
No charging ritual and nothing to clip on. The insole goes into an ordinary shoe and stays there, which answers the two complaints practitioners raise most often about consumer trackers: forgotten charging and lost devices.
Why measure at the foot instead of the wrist?
Because the wrist misses what matters. Practitioners have long reported that wrist-worn devices under-count steps when someone walks with a frame or a slow gait, since the arm barely moves. The foot is where the whole body meets the ground, and an insole sits there without anything to clip on or remember.
What is biomechanics?
The science of how bodies move. It studies anything that moves, how it moves, what it needs to move, and how to help it move better. Walking, running, and cycling are all biomechanics.
What is gait?
Gait is the scientific word for the way you walk. A full cycle runs from heel strike, through toe off, to the next landing of the same heel. Everyone's cycle has the same parts, but no two people perform it the same way.
How do scientists measure movement?
For decades, motion capture labs tracked reflective markers with cameras. Today, small wearable sensors measure movement anywhere, in real life rather than a lab. The same kind of sensor sits in every smartphone.
Is the way I walk unique?
Yes. Your foot shape, your build, and habits formed over a lifetime combine into a pattern that belongs to you alone. That is why gait can identify a person, and why it is very difficult to fake.
How does gait recognition work?
A smart insole reads how a person stands, bears weight and moves through each stride, capturing more than 50,000 data points in 10 seconds of walking. That pattern, a spatial temporal fingerprint, is distinctive enough to verify that a person is who they say they are.
How does Bio_Sole use biomechanics?
Our smart insole reads the way you stand, bear weight, and move, and is designed to confirm that you are you with every step. The biometric stays on the device, and the world only ever receives a yes or a no.
Where is the biometric kept?
Inside the person's own shoe, on their own device. It is never stored as an image or a template anywhere else, and no biometric database exists. What leaves is a single-use, time-stamped proof that a verified person was present. We call this Known, Not Shown.
What do outside systems receive?
A yes or a no. Nothing else crosses the line. Bio_Sole calls this Known, Not Shown.
Is any biometric database kept?
No. Recognition happens on the device, in the person's own shoe. Systems that rely on it receive only a single-use, time-stamped proof token. There is no biometric database to breach. We call this Known, Not Shown.
Why is a walk better than a face or a fingerprint?
Faces, fingerprints and irises leave the body and are stored as images, so they can be copied and, increasingly, manufactured by software. A walk is not an image. It is never stored as a picture of anyone, so there is nothing to lift, photograph or replay.
Can a walk be copied the way a badge or a password can?
A walk cannot be photographed, lifted from a glass, or replayed by software, because it is never stored as an image. The credential is the person, so a badge passed hand to hand stops working.
Who owns the data generated on the platform?
Individuals control what they share and can withdraw at any time. Research teams own the data their studies generate. Bio_Sole does not sell data.
Is Bio_Sole's AI like a chatbot?
No. Chatbots are language models that predict plausible words. Bio_Sole uses classification models that label real physical events in sensor data - heel strikes, toe-offs and strides - and are tested against what actually happened.
Can Bio_Sole's AI decisions be audited?
Yes. The pipeline is time-native: every reading and every model decision is time-stamped, kept and replayable, and every version of every model is retained. Auditable, inspectable and explainable are the three tests every model must pass.
Who leads AI at Bio_Sole?
Thomas Elliott, Head of AI and Machine Learning: 30 years across Nortel, Entrust, Amdocs and Ericsson, and an advisor to boards on AI governance.
What makes a measurement Ground_Truth™?
A measurement that can account for itself. It carries four things from the moment it is taken: who it came from, what took it, when, and under what conditions, so it can be checked later rather than assumed. It does not claim to be perfect. It claims to be checkable.
What is the difference between Ground_Truth™ and Bio_Sole?
Ground_Truth™ is the standard: what a measurement has to carry before we will trust it, and what we refuse to claim about it. Bio_Sole is what produces it, meaning the company, the smart insole, and the architecture behind it.
Why does identity come first?
Because a measurement that cannot say whose it is cannot be trusted, and no software turns a number of unknown origin into a reliable one. Identity is confirmed first, and everything after it inherits that.
Can the whole system be audited, not just the AI?
Yes. Every model must pass three tests before it runs: auditable, meaning the record exists and an outside party can check it; inspectable, meaning it can be opened and examined; and explainable, meaning any decision can be given a reason a person can follow.
Is Bio_Sole a medical device?
Bio_Sole is positioned as a general wellness product. It is not a diagnostic tool, and it makes no medical claims.
Does Bio_Sole diagnose, treat, or prevent any disease or condition?
No. Bio_Sole is a general wellness product. It does not diagnose, treat, cure, or prevent any disease or condition, and it is not a substitute for professional medical advice.
Why does Bio_Sole make no health claims?
Two reasons. It is the rule for a general wellness product, and it is the right way to earn trust. We only say what we can stand behind.
What quality standards does Bio_Sole follow?
Our quality system follows the FDA's Quality Management System Regulation and ISO 13485:2016. Every stage of the product's life is planned, recorded, and reviewed, including data integrity, cybersecurity, and privacy.
Is this a clinical or diagnostic tool?
No. Bio_Sole is a general wellness product. It does not diagnose, assess, screen for, monitor, or treat anything, and it is not a substitute for professional judgement. What it produces are attested wellness signals, not clinical results.
Who decides what is shared with a practitioner?
The client, every time. Sharing is opt in, visible before they agree, and can be withdrawn at any point. Nothing reaches a practitioner by default.
Does a practice have to store any biometric data?
No. The biometric stays on the client's own device, inside their insole. Your practice never holds a face, a print, a template, or a movement record, so there is no biometric database to defend. We call this Known, Not Shown.
How does identity verification help a practice?
It answers who with certainty, which matters for virtual sessions, community visits, and funded programs. Identity is confirmed at the source and systems receive only a yes or a no.
What is continuous identity authentication in insurance?
Verifying that the person on a policy, claim, or work site is really that person, throughout the relationship rather than once at intake. Bio_Sole does it through gait: the way a person stands, bears weight, and moves.
How does Bio_Sole verify identity without storing biometrics?
The biometric is read and kept on the person's own device, in their shoe. It is never stored as an image or template anywhere else. Systems that rely on it receive only a yes or a no.
What fraud problems does this address?
Identity fraud, policy fraud, account takeover, ghost claimants, and credential sharing in high-security environments. Identity is the root control every other control inherits.
Does deploying Bio_Sole create biometric data custody for the insurer?
No. Your organization never holds a face, print, template, or gait record. There is no biometric database to defend and no honeypot to breach.
Can this support wellness or return-to-work programs?
The signal belongs to the person. They may choose to share general insight into how they are, as observations, not diagnoses, inside a program they opted into. Opt in, and transparent.
Who do we talk to?
Bill Tyson, Insurance Lead at Bio_Sole: a 5th generation insurance professional with 40 years across the industry, from reinsurer to broker.
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