This is the laboratory of Denshi-land's “genius scientist,” the Professor.
It looks like the two electronic spirits: the Capacitor and Inductor have come from next door to play in Professor's room.


Capacitor
Hello!

Inductor
Professor, are you here?

Professor
Guh! Arghhh!

Inductor
Whoa! What's going on?!

Professor
Urgh, ow...

Capacitor
Professor, are you all right?!

Professor
My medicine... Get my medicine!

Capacitor
What medicine?

Inductor
This room is too messy for us to find anything!

Professor
Use this... *thud*

Capacitor
Professor!

Inductor
What did he give you?


Capacitor
A stone...?It looks like it's vibrating.

Inductor
What are we supposed to do with a stone...?Anyway, we need to hurry and look for the medicine!

Capacitor
Oh yeah, that's right!Hmm, is it over here?

Stone
(*Stone vibrating*)

Capacitor
Whoa! The stone is pulling me to the right!

Inductor
The stone is pulling you?!

Capacitor
I think it's trying to tell me something.
Maybe it's inside this fridge over here?

Stone
(*Vibrating more intensely*)

Capacitor
It's pulling me to the left now!
Is it this desk?

Stone
(*Vibrating softly*)

Capacitor
The vibration is getting weaker.

Inductor
Does that mean the medicine is in this desk?
How could a stone tell me something like that...?

Capacitor
(*Rummaging through the desk*)
I found it! This must be it.
The two gave the medicine to Professor.
......
Professor regained his strength after a while!


Professor
Whew, that was a close call.
I was pretty close to never inventing anything ever again.
Thanks, Capacitor and Inductor!

Capacitor
So what happened?

Professor
Hmm.
I was eating a piece of cake from the back of the fridge. But it turns out that the cake expired over a year ago.

Inductor
......
How about making an expiration date sensor before inventing anything else?

Capacitor
Forget that! Anyway, your stone was amazing!
It pulled my hand to tell me where the medicine was.

Professor
Oh ho ho! Isn't it quite something?This is an invention that will improve the future for everyone...
It's the Wonder Stone!

Inductor
The future of society... Is it really that amazing as an invention?

Professor
Yes.
A fellow researcher from another world asked if they could borrow it the other day.
It's going to be used at an event known as Expo 2025.
Officially known as Expo 2025 Osaka, Kansai, Japan.
The event will bring together many technologies and ideas from all over the world!


Professor
Apparently, it’s another place with areas that the stone will guide you through.

Capacitor
I can't believe it... Using a stone as a guide...
How does it work?

Professor
Very well,let me explain in my laboratory!
The three left Professor's room and moved to the laboratory......
The secret behind how it pulls your hand is hidden in the brain!


Professor
Ahem.Now, I'll explain the secret behind how the stone pulls your hand.
Although in reality, the stone wasn't actually pulling your hand.The stone was just vibrating.

Capacitor
What? It sure felt like I was being pulled to the right and left.

Professor
That's exactly it.
The stone was stimulating your hand in a way that made your brain think your hand was being pulled!

Inductor
It can do that?!

Professor
Yes. The brain is actually quite easy to trick.

Capacitor
Why would it feel like it was pulling me when it was just vibrating...?

Professor
There's a trick to how it was vibrating.This is “3DHaptics” the technology that recreates a realistic sensation using the power of neuroscience!
With more research, it may become possible to recreate other sensations besides pulling.
The sense of touching something rough like a piece of brick.The sense of walking on something soft like a sandy beach.
Those kinds of sensations should be possible some day by changing how we stimulate the brain.

Capacitor
Wow!

Inductor
Wait, hold on.I get that the stone tricked the brain into thinking it was being pulled by stimulating my hand.
But the stone guided me to where the medicine was by pulling me left and right.How did it do that?

Professor
That's a good question.
It's true that vibrating isn’t enough on its own to be a guide.The stone is using a different technology at the same time to accomplish that.
It's an LF antenna.

Capacitor
An LF antenna?!
The stone responds to the LF antenna's magnetic field to show the correct way!

Professor
There are multiple LF antennas in my room.You can think of it like I’ve placed LF antennas to create a path.
The LF antennas have the ability to create “magnetic fields.”

Inductor
Oh! I've heard of magnetic fields.They’re how magnets work, right?

Professor
Yes, and you’re good with magnetism, Inductor.

Professor
This stone can tell where it’s at by detecting magnetic fields.
That's why it can respond immediately when going the wrong way and vibrate to indicate the correct way.

Inductor
So if I go too far to the right, it will vibrate to tell me to go left!

Professor
The practice and application of inventions and technologies like this will create a bright society in the future!

Inductor
So there might be more ways that we can use this?

Professor
Of course!How about using it at train stations or city halls, for example?
A blind person can walk to their destination without worries if they are guided through the vibrations.Of course, they might make it a cane instead of a stone in cases like that. There are all sorts of uses for it!


Inductor
Wow, you're right. That's a great idea!

Professor
It might be useful in video games as well!We already have controllers that vibrate, but there may be more realistic sensations in the future.
It might feel like you're actually touching items or walking around in the world.


Capacitor
Professor sure likes his video games...

Professor
Ahem.
There are so many different ways we can utilize 3DHaptics.Let's all think of different ways to utilize them!
Experience 3DHaptics at Expo 2025!

Inductor
So I can touch one of these stones directly if I go to Expo 2025?

Professor
That's right!Expo 2025 will be held at a place called “Yumeshima.”


Professor
The Wonder Stones will be used at the signature pavilion called “Better Co-Being.”
It is a space where you can experience the resonance between nature and all sorts of people.

Capacitor
That sounds really fun!
Hey, are there other inventions being used at Expo 2025?

Professor
Yep, there are a few!

Inductor
Tell me about them! I'm curious.

Professor
Oh, okay, of course.
......It's just that I'm very close to finishing this VR game.I'll tell you about it once I'm done. (*Clicking*)

Capacitor
Aww, he put on the headset and started playing video games. How boring.

Inductor
Hey! Professor!Play your video game after we're done here!(*Slap, slap*)

Capacitor
Come on, I want to know more!(*Shake, shake*)

Professor
Whoa!? What is this intense sensation on my back?!
My body is shaking!
This is unbelievably realistic!Does this game also use 3DHaptics?!
To be continued
Summary

The 3DHaptics technology stimulates the skin and tricks the brain to recreate various sensations.
The stone is able to use 3DHaptics to guide you on the correct path by detecting magnetic fields generated by the LF antennas, alerting the stone if it veers off the correct path.