The Invisible Person Project: The Space Where I Do Not Want to Be Found

A Full-Body, Signature-Linked Presence-Registration Blocking Suit

AN SEUNGWON · Wonbrand · May 28, 2026

Public Technical Disclosure / Public Technical Proposal · Version 1.0

Technical classification terms: full-body presence-blocking suit, selective omission of presence, signature-linked neural gating, full-body signature-linked neural gating suit, perceptual exclusion field, presence-registration blocking device

1. The Space Where I Did Not Want to Be Found, in a Dream

In a dream, a woman was being chased by a man.

She was not simply trying to hide her body somewhere. She did not want him to discover the very fact that she existed within her own space.

I don't want anyone to know that I'm in my space.

The man could not locate her. Then, as he swung a knife, it grazed her body.

She began to bleed.

At that moment, it became clear that a woman had been there in that space.

What remained after I woke was not an image of transparent skin. It was a state in which a person was unmistakably present in the same space, could collide with reality and be wounded by it, and yet remained as though nonexistent in another person's perception.

The question begins here.

Can a person physically exist in the same real space, yet fail to register in another person's consciousness as a human being who is there? And can such a state be engineered through a full-body suit and signals generated by that suit?

2. Not Removing the Body, but Blocking Its Registration as a Presence

An invisible person is usually imagined as someone whose body becomes transparent: light passes through the body, the background remains visible behind it, or the person slips into some other space.

The woman I saw in my dream was not invisible in that way.

She was in the same space. The fact that the man's knife touched her proves it. To transfer that state into a device, the wearer must remain fully present in reality.

They step on the floor.
They open doors.
They touch objects.
They can collide with another person.
They can be wounded by an external attack or accident.

And yet the people around them fail to notice the wearer as a human presence.

What disappears here is not the body. What is blocked is the process by which the wearer becomes registered as a presence in the consciousness of those nearby.

In an earlier essay, I wrote about an experience in which the sound of an Instagram Reel kept reaching my ears, yet did not rise into my conscious awareness until I looked at the phone. The stimulus existed all along, but the moment consciousness brought it forward was separate. In that essay, I approached this as a question of perception and weighting. This project pushes the same question to the level of an entire human presence.

If a stimulus can enter the senses without being registered, could the full set of signals coming from a particular person be bound together and blocked just before registration as a presence?

The invisible person in this project is not an invisible body, but an unregistered presence.

3. The Core Device: A Full-Body, Signature-Linked Presence-Registration Blocking Suit

Ordinary clothing is not enough to create this state. The cues by which we recognize a person are not limited to the colour of the torso.

The face, hair, jawline, the junction between neck and shoulders, fingers, toes, the movement of the arms, the rhythm of walking, the continuous outline of the entire body: if even one of these remains as an ordinary human cue, an observer can use it to assemble the wearer into a person.

The device must therefore take the form of a full-body, form-fitting suit.

It includes the scalp and face.
It extends continuously across the neck, torso, arms, fingers, legs, and toes.
It leaves no visible hair or skin exposed.
It minimises protruding pockets, zippers, or equipment shapes.
It follows the body's movement without breaking the signature system.

This suit is not clothing worn over the body. It is a second skin that converts the wearer's entire external surface into a single coded target of perception.

The device can be reduced to three elements.

Element	Definition	Function
X	The physical component or functional layer implemented within the full-body suit	Converts the wearer's entire body into a target that can be signature-marked
S	The unique signature formed by X across the wearer's entire body	Specifies the target that M is to selectively block
M	A signature-linked neural-gating signal generated by the suit within a defined surrounding area	Suppresses the registration of a wearer bearing S as a human presence in nearby observers' consciousness

The operating sequence is simple.

Functional layer X of the full-body suit
→ forms a unique signature S across the wearer's entire body
→ the suit generates a signal M in the surrounding area, linked to S
→ in the perceptual processing of observers within that area, registration of the human bearing S is suppressed
→ the wearer remains in the same space without being detected

4. X: A Second Skin That Places the Wearer Within the Selectable Target Set

X is not a magical transparent material. Its role is to place the wearer's entire body into a single target state that M can select.

No matter how strongly M affects an observer's brain, it cannot conceal only the suit wearer unless it has a criterion for what to exclude. For walls, doors, knives, and other people to remain perceptible while only the person wearing this suit drops out, the wearer must first carry a physical marker that belongs only to them.

X is what creates that marker.

Requirements for X

1. Full-body continuity It maintains the same signature system across every externally exposed surface, including the face, hands, and feet.

2. Continuity in movement The same target signature is maintained when the wearer walks, bends down, or extends an arm.

3. Selectivity It creates a characteristic absent from ordinary people and ordinary objects, enabling M to target only the wearer.

4. Response to damage If the outer layer is torn or the continuity of the signal is broken, the wearer's perceptual state can change accordingly.

Initial Fabrication Form of X

The initial form of X is defined as a stretchable active-signal outer skin.

A skin-tight base membrane made of TPU or silicone elastomer
A stretchable electrode layer that follows deformation at the joints
A flexible electroluminescent film or light-emitting fibre layer capable of outputting signals across the body's full surface
A continuous surface extending across the face, fingers, and toes
Contour structures with higher signal density around the head and shoulders, arms, and legs

Wearable light-emitting fibres and textile displays have already developed into a research field capable of implementing active optical signals on flexible clothing surfaces. This project uses that technology not as clothing that displays images, but as an outer skin that turns the wearer's entire body into a single signature-bearing target.^[16]^[17]

5. S: The Unique Signature That X Leaves on the Wearer

X is the cause; S is its result.

S is not merely a colour or pattern. It is a unique sensory signature retained by the wearer as an entire moving human being. What M blocks is not a material called X, but the registration as a human presence of a person who carries the outwardly manifested signature S created by X.

X = the suit's physical functional layer
S = the unique signature created by X across the wearer's entire body
M = the signal that blocks registration of a target bearing S as a presence

What S Must Do

It exists only across the wearer as a whole.
It does not exist in ordinary people or ordinary objects.
It remains the same signature even as the wearer moves.
When another person sees the wearer, it serves as the criterion to which M can selectively link.

Initial Validation Code for S

The physical form of the final S must be narrowed down through experimentation. The first validation step, however, requires a measurable signature. The initial candidate is a temporally modulated visual signature.

When two colours alternate rapidly at similar luminance, an observer may perceive something closer to a single fused colour than a conspicuous flicker. Yet the human visual cortex may still respond to such colour alternation even beyond the perceptual threshold. Jiang, Zhou, and He reported that, even under conditions in which equiluminant chromatic alternation above 25 Hz is perceived as a single fused colour, multiple regions of the human visual cortex respond differently to it than to a static colour.^[7]

Accordingly, the first candidate code for S is defined as follows.

Item	Initial candidate
Surface range	The entire full-body suit, including face, hands, and feet
Temporal code	Low-contrast temporal colour modulation
Candidate frequencies	10 Hz experimental coupling code / 25 and 30 Hz invisibility-exploration codes
Purpose	To convert the wearer's entire body into a signature-bearing target that can be coupled with M

The 10 Hz code is an experimental code for testing frequency and phase coupling with an observer's brain stimulation. The 25 Hz and 30 Hz codes are exploratory codes for determining whether a surface signal can remain in the visual system without becoming overly conspicuous to the eye. Their roles are different. The first experiment begins with the 10 Hz code in order to verify coupling with M, then expands to higher-frequency signatures at the stage of implementing the full-body outer skin.

6. M: A Signal That Does Not Erase a Presence, but Blocks Its Registration

M is the core of this project.

M is not a signal that blinds the people nearby. Nor does it blur the brain as a whole so that the surrounding space cannot be judged properly. Such methods could not selectively remove only the wearer.

M has exactly one function.

Within the perceptual processing of observers in the affected area, it prevents only information about the human being who bears S from rising into the judgement, “There is a person over there.”

The success conditions for M are therefore as follows.

Walls, floor, doors, knives, ordinary people → perceived normally
Targets without S → perceived normally
Wearer of the full-body suit bearing S → registration as a presence suppressed

In an observer's brain, object recognition and conscious access are not a single step. Even when visual information enters the system, a separate process determines whether it rises into consciously reportable content. Dehaene and Changeux identified the transition from nonconscious processing to conscious access as a central problem of research, while Simons and Chabris demonstrated in dynamic scenes that even a conspicuous event directly in front of the eyes can go unreported when attention is engaged elsewhere.^[4]^[5]

Research has also found that temporarily perturbing the lateral occipital cortex involved in object recognition with TMS alters object-processing performance, and that applying focused ultrasound to the human primary visual cortex changes visual sensations and associated network responses.^[13]^[14] These studies show that human perceptual processing can be modulated by external stimulation.

The question added by this project is more precise.

Can M be designed not to disrupt the entire visual field, but to block only the registration as a presence of one human being bearing S?

The word “radio wave” is not the definition of M; it is only a possible carrier candidate. Ordinary exposure to radiofrequency electromagnetic fields has not been shown to reduce human attention, audiovisual perception, or memory performance. A 2024 systematic review and meta-analysis covering 76 human experimental studies likewise found no statistical effect indicating that short-term RF-EMF exposure impairs cognitive performance.^[15]

M is therefore defined as a neural-gating signal that selectively suppresses an observer's registration of a presence through coupling with S. How the suit might transmit it through space is a development problem to be addressed only after selective coupling between S and M has been demonstrated.

7. What It Means for a Person Not to Be Seen

What matters in this project is not the statement that a person has been completely erased from the visual field.

The observer sees the room. They see the floor, the walls, and the door. Yet they fail to bring the wearer within that space forward as a person. Between seeing and noticing, only the wearer falls out.

The woman in the dream was in precisely this state. The man did not swing his knife at empty space; he swung it into a space that he could not register as containing a person. Because she existed in reality, the knife grazed her. At the moment an external event occurred, the concealed presence was revealed.

What becomes visible, and how, after that moment is left open as an outcome of the device.

Only the fact that someone is there may become apparent.
Their location may be revealed first.
Perception may recover around the damaged portion of the outer skin.
The event may break the coupling between M and S, causing the wearer as a whole to be registered again.

The dream did not establish the form of the reveal. What it left behind was a structure in which a presence is omitted until an external event exposes it.

8. One Initial Experiment That Can Be Attempted

Experiment Title

Selective Reduction in Presence Detection of a Full-Body Figure Bearing an S-Signature

Question to Be Tested

When an ordinary person and a full-body suit wearer bearing S appear within the same scene, does applying M, temporally coupled with S, to the observer's visual processing make only the S-bearing wearer less detectable?

This experiment does not reproduce the knife or the blood. The first issue to test is not the scene of exposure, but a single question: whether selective omission of a presence is possible.

Implementing X, S, and M in the First Experiment

Element	Implementation in the first experiment
X	A real matte full-body suit covering the wearer from head to toe. In the initial experiment, it serves as the base target whose surface can be controlled in recorded images, rather than as an expensive active outer skin.
S	A low-contrast 10 Hz temporal colour code applied digitally only to the surface of the filmed full-body suit. It is not applied to the ordinary person or surrounding objects.
M	Research-grade occipital tACS administered at the same 10 Hz frequency as S, with phase relationship to S adjusted as an experimental neural-gating signal.

In this experiment, M is not the signal that a completed suit would emit into space. It is a method for first determining whether, once M reaches an observer's brain, only the target coupled with S can be selectively registered less often. This design begins directly from research showing that the phase relationship between visual flicker and occipital tACS at the same frequency can alter the perceived brightness of flickering light.^[11]

Constructing the Stimulus Scenes

1. One person wears ordinary clothing. 2. Another person wears a matte full-body suit covering the face, hands, and feet. 3. The two people are filmed together in the same indoor space. 4. The S code is digitally applied only to the surface of the full-body suit. 5. Multiple scenes are created in which the two people's positions are switched between left and right. 6. Ordinary objects such as a chair, door, and table are also placed in the scenes.

There is one reason to test S first on a video surface before building an actual functional outer skin: if one begins by fabricating a full-body active outer skin before identifying which signature couples with selective omission, the failure of the material cannot be separated from the failure of the perceptual structure.

Participants and Equipment

40 adult participants with normal or corrected-to-normal vision
Prior screening for suitability for repeated visual stimulation and non-invasive brain-stimulation experiments
High-refresh-rate display
Response button
tACS equipment operated under institutional ethics approval

Experimental Procedure

First, the S–M phase condition is identified for each participant. The full-body figure bearing S is shown briefly while the phase of M is varied, and the condition producing the lowest detection response for the wearer is selected.

The main experiment then randomly presents the following four conditions.

Condition	S on the full-body figure	M applied to the observer	Purpose
A	Absent	Sham	Baseline scene
B	Present	Sham	Determine whether S itself raises or lowers detectability
C	Absent	Applied	Determine whether M blurs the ordinary scene as a whole
D	Present	Applied in a phase coupled with S	Determine the selective coupling effect of S and M

Each scene is presented for a short interval.

300 ms
700 ms
1,500 ms

After each scene, participants are asked four questions.

1. How many people were present? 2. Where was each person located? 3. Did you detect the person wearing the full-body suit? 4. How confident are you in your judgement?

Evaluation Criterion

The meaningful result in this experiment is not that “people were confused.” The following pattern must emerge.

In conditions A, B, and C, both the ordinary person and the full-body figure are detected.
Only in condition D, while detection of the ordinary person and ordinary objects is preserved,
do the detection rate and location-judgement accuracy for the S-bearing full-body figure decrease.

The core of the statistical analysis is the `S × M` interaction. Detection of the full-body figure must decrease only when M is operating in the presence of S, while detection of ordinary people and objects remains preserved.

If this result is obtained, it would constitute initial evidence that the S created by X can be linked to neural gating M in an observer. Only then does the development problem open: transferring S from a video surface to an actual full-body outer skin X, and transferring M from a laboratory-administered signal to a signal generated by the suit itself within a defined surrounding area.

9. The State Toward Which This Device Is Directed

The idea of making an invisible person usually brings to mind a technology that erases the body. But the woman in the dream was not hidden because her body had disappeared. She remained in the same space, was in contact with that space, and became perceptible as a presence when an external event occurred.

The destination of this project is therefore not transparent skin.

Functional layer X of the full-body suit creates a unique signature S across the wearer's entire body. Signal M, generated by the suit, acts on observers within a defined area and blocks the route by which the human being bearing S becomes registered as a presence. The walls, the door, and other people remain; only the wearer drops out of the conscious scene.

When a person does not want it to be discovered that they are within that space, the problem is not where they can disappear to.

The problem is how they can remain as though nonexistent in the consciousness of the people looking into that space.

In the dream, the woman was revealed the moment she bled. This project transfers the state before that moment—the state of being in the same space without being detected—into a device.

References and Related Technologies

Previous Essays by the Author

[1] An, Seungwon. What Happens When a Woman Wears High Heels — The Preference Weighting Hypothesis: The Place Toward Which Consciousness Turns, Between Perception and Attraction. Wonbrand, May 5, 2026. Original in Korean ↩
[2] An, Seungwon. If Software Could Be Controlled by Thought Alone — Why the Answer May Be Found in the Neck Rather Than the Brain. Wonbrand, April 18, 2026. Original in Korean ↩
[3] An, Seungwon. How Does Anaesthesia Switch Off Consciousness? — Solving a 180-Year-Old Problem Through a Single Line of Reasoning. Wonbrand, April 12, 2026. Original in Korean ↩

Conscious Registration and Nonconscious Visual Processing

[4] Dehaene, S., & Changeux, J.-P. (2011). Experimental and theoretical approaches to conscious processing. Neuron, 70(2), 200–227. DOI ↩
[5] Simons, D. J., & Chabris, C. F. (1999). Gorillas in our midst: Sustained inattentional blindness for dynamic events. Perception, 28(9), 1059–1074. DOI ↩
[6] Tsuchiya, N., & Koch, C. (2005). Continuous flash suppression reduces negative afterimages. Nature Neuroscience, 8(8), 1096–1101. DOI - Reference to a related phenomenon in which visual input can be continuously present yet suppressed from conscious report. It is not adopted as the operating principle of the device proposed here. ↩

Visual Signatures and Object Recognition

[7] Jiang, Y., Zhou, K., & He, S. (2007). Human visual cortex responds to invisible chromatic flicker. Nature Neuroscience, 10(5), 657–662. DOI ↩
[8] Blakemore, C., & Campbell, F. W. (1969). On the existence of neurones in the human visual system selectively sensitive to the orientation and size of retinal images. The Journal of Physiology, 203, 237–260. PubMed Central ↩
[9] Singer, J. M., & Kreiman, G. (2014). Short temporal asynchrony disrupts visual object recognition. Journal of Vision, 14(5), 7. DOI - Relevant to examining candidate signatures based on temporal dispersion across body regions; it is not established here as the final S code. ↩
[10] Sharman, R. J., Lovell, P. G., & Lovell, G. P. (2018). Dissociating the effect of disruptive colouration on localisation and identification of camouflaged targets. Scientific Reports, 8, 6599. DOI - Relevant to examining the effects of contour disruption on target identification; background camouflage is not the central structure of this project. ↩

Experimental Starting Points for Neural-Gating Signal M

[11] Fiene, M., Radecke, J.-O., Misselhorn, J., Sengelmann, M., Herrmann, C. S., Schneider, T. R., Schwab, B. C., & Engel, A. K. (2022). tACS phase-specifically biases brightness perception of flickering light. Brain Stimulation, 15(1), 244–253. DOI ↩
[12] He, Q., et al. (2022). Boosting visual perceptual learning by transcranial alternating current stimulation over the visual cortex at alpha frequency. Brain Stimulation. PubMed ↩
[13] Mullin, C. R., & Steeves, J. K. E. (2011). TMS to the lateral occipital cortex disrupts object processing but facilitates scene processing. Journal of Cognitive Neuroscience, 23(12), 4174–4184. DOI ↩
[14] Lee, W., Kim, H. C., Jung, Y., Chung, Y. A., Song, I. U., Lee, J. H., & Yoo, S.-S. (2016). Transcranial focused ultrasound stimulation of human primary visual cortex. Scientific Reports, 6, 34026. DOI ↩

Evidence for Assessing Radiofrequency Signal Candidates

[15] Pophof, B., Kuhne, J., Schmid, G., Weiser, E., Dorn, H., Henschenmacher, B., Burns, J., Danker-Hopfe, H., & Sauter, C. (2024). The effect of exposure to radiofrequency electromagnetic fields on cognitive performance in human experimental studies: Systematic review and meta-analyses. Environment International, 191, 108899. DOI ↩

Materials Relevant to Implementing Full-Body Functional Outer Skin X

[16] Hwang, Y. H., Kong, S. U., Kim, C. Y., Lee, J., Cho, H. E., Jeong, S. Y., & Choi, K. C. (2022). Organic light-emitting fibers and fabrics for truly wearable smart displays: Recent progress and future opportunities. Journal of the Society for Information Display, 30(10), 727–747. DOI ↩
[17] Fu, X., et al. (2024). Self-healing actuatable electroluminescent fibres. Nature Communications. PubMed Central ↩

An Seungwon / Wonbrand / https://wonbrand.co.kr