Brand Philosophy: KOICHI LEATHER


KOICHI LEATHER uses Italian leather and values "craftsmanship that gently shapes the safety of families and pets." With this in mind, we launched a public project as a countermeasure against lost pets, who are part of the family.
"Towards zero lost pets."
Our leather smart collar, **pet-key**, which allows you to easily check information with your smartphone, embodies this wish. Made with high-quality Italian leather, it is a collar that combines safety and beauty. We deliver a system that anyone can use immediately to protect their beloved family members.

Zero Lost Pets Initiative

Regarding the pet-key collar

With pet-key, simply hold your smartphone over the mark engraved on the collar, and the dedicated web app will automatically launch. Pet information, photos, contact details, and AI guidance audio, all pre-registered by the owner, will be displayed, enabling the finder to take immediate action.

The web app can be intuitively edited, and in the event of a lost pet, the content can be switched to high-priority information. We provide gentle and reliable peace of mind in case of an emergency.

*This is a sample of the web app. Please note that the design may be changed without prior notice.

Web app sample

Differences from similar products

🔐 How pet-key Works (JP Patented)

Expanded scan area for easier smartphone readability.

No dedicated app required, instant display with standard browser.

AI voice guidance with fixed narrations conveys requests for protection/gratitude.

Data is encrypted and stored on a server using HTTPS communication with a proven track record in Japan, and can be freely changed via the web app.

📌 Patent No. 7766838 (Patented system for contacting lost individuals)

*In the narration sample, you can play changeable voices.

Narration samples

Plan to subscribe for use

💰 Peace of Mind Maintenance Plan

Operating your smart collar requires a server maintenance fee of 150 yen (tax included) per month.
→ This fee will be used to maintain the lost pet contact feature, data storage, and continued operation.

You can use it safely and securely from anywhere in the world.

Plans for the World

Our shop allows you to switch languages to English and Chinese (Simplified) from the menu.
We strive to provide clear explanations and comprehensive support so that international customers can use our services with peace of mind.

Please note that sales outside Japan are limited to:
"pet-key Web App (standalone plan)" + "pet-key Peace of Mind Maintenance Plan"
only.
*While the Japanese version of the app includes AI voice functionality, it does not support English or Chinese (Simplified).

We apologize for any inconvenience this may cause and appreciate your understanding.

pet-key 60-second video (Features may be added or changed)

pet-key Easy Operation Explanation Video (Functions may be added or changed)

Project: Zero Lost Pets

You will be redirected to a page that explains pet-key in detail.

Click here

KOICHI LEATHER is pleased to announce that we will begin accepting custom orders and sales for pet-key starting today, following a period of preparation.

We sincerely thank everyone who has patiently awaited the start of sales.

Due to family circumstances, I have been gradually preparing while continuing to support my mother's rehabilitation. I deeply apologize for the inconvenience and concern caused by the multiple changes to the sales launch date.

At pet-key, we create each product with the utmost care, guided by our commitment to "thoughtfully crafting each item for your cherished family member."

While we are a small brand, this allows us to truly value our connection with each customer and meticulously produce products that you can use with confidence, always striving for high quality.

We invite you to visit our product page for more details about pet-key.

To commemorate our launch, as a token of our gratitude to our customers, we are offering a **special 15% off coupon for new pet-key products to the first 20 customers** (a product review is required).

Coupon code: AXBX3QWETV17

We will continue to create products that bring peace of mind to you and your beloved family members.

We appreciate your continued support of KOICHI LEATHER.

New Customer Purchases

Please find the explanation of how to purchase below.

🛒Items to add to your cart for purchase

Please be sure to add the following 2 items as a set to your cart:

  1. pet-key collar (main unit), or pet-key keychain (main unit), or pet-key Web app (standalone plan)
  2. pet-key 安心維持プラン (Safety Maintenance Plan) (150 yen/month)

✔ After your purchase, we will begin setting up the system to activate the lost pet prevention function.
*Data registration is required after purchase.

✍️ Steps after purchase

  1. After completing your purchase, you will receive an order confirmation email.
  2. After confirming the email, please enter and submit your information from pet-key registration in the site's top menu.
  3. Based on the submitted content, we will begin building a dedicated Web app for you.
  4. Once completed, the function will be automatically activated by NFC scan.

pet-key "New"

🔁 If you are purchasing a replacement

Existing web app data will be imported as is and written to.

pet-key「 Exchange 」

License Tag Case

Since pet tags are mandated under certain conditions, this product is a case specifically designed for pet-key.

pet-key Collar FAQ (Frequently Asked Questions)

Q1. Does it require batteries?

No, it is not necessary.

Q2. Does it work on all smartphones?

Available on most smartphones. NFC-enabled models only.

Q3. Where do I edit?

You can log in from the web and change it at any time.

Q4. Is the monthly fee mandatory?

This is essential for the operation of the lost child contact function.

Q5. Will my personal information be leaked?

The collar contains only a URL, and information is managed on the server. The data displayed in the web application is content edited by the customer, and you can define and input the sharing scope.

Q6. Will the data be overwritten?

Yes. The tag has a URL embedded and locked that is exclusive to you.

Q7. What will my role be in the event of a disaster?

This is an urgent matter. The owner's appropriate editing will determine the outcome.

Q8. Is the pet-key waterproof?

Although the tag itself is waterproof, the genuine leather absorbs moisture, so it is not completely waterproof.

Q9. How do you make the collar function a habit?

We need to spread information that there are also collars that advertise and tap smartphones. This product really needs a social phenomenon.

Q10. What's the difference between patentable and non-patentable subject matter?

The patent covers a collar. For example, if you purchase a keychain and create data, the patent will cover the collar by writing the same URL to it.

Thank you for reading to the end.
For us, pets are "family."
We believe this sentiment is shared by all pet lovers.
May pet-key become the "new normal" and help protect the bond between you and your precious family.