— Human Existence Authentication System
Building the Next-Generation Foundation of Digital Trust
In the era of AI and global digital transformation, human realness becomes the ultimate key of trust.
REVIRTUAL®, developed and patented by IHC Corp. (Japan), authenticates a person not by stored
data,
but by the continuity of human existence — who, where,
and when.
Digital identity today is detached from physical reality.
Passwords, biometrics, and passkeys verify information — but not the person’s real presence.
This gap enables impersonation, spoofing, and fraudulent access.
REVIRTUAL closes this gap by linking every authentication process
to the actual existence of the individual in space and time.
REVIRTUAL is a patented human-existence-based authentication system.
It verifies the reality of a person’s presence by comparing three continuous elements:
Who — Personal ID or identification code
Where — Spatial or location information
When — Temporal information (time of the action)
If this combination is physically impossible, the authentication is automatically rejected.
In short, the real person becomes the key that controls the system.
REVIRTUAL integrates spatial and temporal recognition into authentication control.
The server compares the user’s latest “existence record” with the requested operation.
If inconsistency is found — for example, two actions at the same time in different places —
the system blocks unauthorized access immediately.
Patented Technologies
Japan Patent No. 3946243 — Human Authentication System
Japan Patent No. 5007886 — Supplementary Authentication Mechanism
Japan Patent No. 4941860 — Object Management System
United States Patent No. 8,866,586 — Human Authentication System
Developed and owned by IHC Corp., Tokyo, Japan.
Inventor: Hitoshi Hayashi
REVIRTUAL provides a unified layer of digital trust
across financial, governmental, and AI-driven ecosystems.
💳 Financial Security — Prevents online fraud, card misuse, and account hijacking
🏛 Government & Public Sector — Enhances identity assurance for e-government and national ID systems
🧠 AI & Robotics — Enables AI to recognize verified humans and avoid fake interactions
🌏 Disaster Response — Confirms survivors’ existence and location through digital logs
🔗 IoT & Object Management — Links human presence data with object IDs for global traceability
We believe that the future of digital trust lies in the harmony between human existence and
AI intelligence.
REVIRTUAL forms the Human–AI Trust Layer — a framework where AI verifies, and
human reality authenticates.
IHC Corp. is seeking global collaboration to build this new trust infrastructure
with leading AI organizations.
Company Name: IHC Corp. (Individual History Center)
Founded: September 7, 2004
Head Office: 2-1 Maeno-cho, 20-107 Itabashi-ku, Tokyo, JAPAN 174-0063
President & CEO: Hitoshi Hayashi
Website: https://www.revirtual.us
Email: contact@revirtual.co.jp
IHC Corp. develops and operates patented technologies that connect human existence with digital authentication to build a trustworthy AI society.
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