# VivoKey Japan

Japanese version: https://vivokey.jp/llms-ja.txt

> VivoKey Japan is the official Japan importer and distributor for VivoKey Technologies and Dangerous Things subdermal implants. Most are NFC or 125 kHz RFID transponders; some are an LED with no chip at all, and biomagnets are a separate category handled by request. It sells the implant, issues an installation voucher, and ships the implant to a partner physician, who installs it. It does not perform procedures and does not sell loose chips.

This file is for AI assistants and crawlers. Every page is bilingual (Japanese first, English alongside, toggled on the page; ?lang=en shows English). Prices are tax-inclusive. The implants are passive (no battery, no GPS, no payment function). Installation is by a partner physician; the procedure fee is paid to the partner physician separately. Orders and questions go through the official LINE account: https://lin.ee/6AGqRid

## Products

- [Home](https://vivokey.jp/): The whole picture in one glance: products and prices, how installation works, the partner physicians in Tokyo and Miyagi, safety, and how to ask.
- [Products and prices](https://vivokey.jp/products.html): Every implant with its tax-inclusive price: xSIID, NExT v2, Spark 2, the three Apex antennas, the KBR1 reader, LED color availability, a comparison table, and the special-order catalog.
- [xSIID](https://vivokey.jp/xsiid.html): xSIID: writable NFC implant with a red or white LED, 2.1 x 15 mm, ¥29,480 incl. tax. Colors, what it does and does not do, specs, the SIDEN app, MRI note, ordering.
- [NExT v2](https://vivokey.jp/nextv2.html): NExT v2: the writable NFC implant with a green or blue LED, plus a 125 kHz T5577 side for specific reader environments. 3.1 x 15 mm, ¥33,110 incl. tax.
- [Spark 2](https://vivokey.jp/spark2.html): Spark 2, the authentication implant: AES mutual authentication, the Spark Actions app, the Verify API, specs, MRI note, price and how to order.
- [Spark Actions and SupportNet](https://vivokey.jp/spark-actions.html): Spark Actions, the free iPhone and Android app for a Spark implant: website, call, email and SMS actions, Digital Cards, a saved library written back over NFC, and SupportNet, the Spark 2 check-in feature where a person who scans the implant can send an anonymous note and, only from their own phone and only once, their location.
- [ChiLi](https://vivokey.jp/chili.html): ChiLi (Chip + Link): tap an implant and a page with the owner's links opens. Made on vivokey.jp/p/builder.html and written to an xSIID, NExT v2 or Apex (NFC Share). No app, no account, nothing stored on a server: the profile is inside the link on the chip.
- [Apex](https://vivokey.jp/apex.html): VivoKey Apex, the implantable security key: the three antennas (Narrow, Module, Spectrum) with size, range and price, the applets, platforms, installation and sterilization facts, and the warranty that differs from the glass line.
- [KBR1 reader](https://vivokey.jp/kbr1.html): KBR1, a USB reader that types an implant's UID like a keyboard: what it does, its limits, specs, and availability in Japan on request.
- [Specialty products](https://vivokey.jp/dt-lite.html): Special order, explained: what it means to bring in a specialty implant from the wider Dangerous Things catalog through VivoKey Japan, which families exist, the limits, and how to ask. The full catalog is a separate page.

## Getting one

- [How it works](https://vivokey.jp/how-it-works.html): The path in Japan: choose, pay by bank transfer, receive the installation voucher on LINE, book with a partner physician yourself, go with ID. Plus what arrives after you pay, the order rules, a typical healing course and who does what.
- [Before you order](https://vivokey.jp/before-you-order.html): Read before ordering: the five that decide it (under 18: guardian's consent required, one implant per order, bank transfer, no return after installation, health), the warnings, the 8 acknowledgements assembled for what you are getting, cancellation and refund, and the order message ready to send.
- [What it costs, all in](https://vivokey.jp/cost.html): The two numbers that make up the cost: the implant price paid to VivoKey Japan by bank transfer, and the procedure fee paid to the partner physician on the day, with worked totals.
- [Installation and partner physicians](https://vivokey.jp/clinics.html): The map of partner physicians: three locations in Tokyo and Miyagi (Shinjuku-ku, Ota-ku and Aoba-ku, Sendai), fee ¥30,000 to ¥35,000 incl. tax for the glass x-series, their days and payment, when you are told where to go, and what to bring on the day.
- [For physicians](https://vivokey.jp/clinic-partners.html): For physicians: what VivoKey Japan asks of a partner physician and what it does not, how a case flows from your side, what you decide, the two installation manuals and what they cover, twelve questions a physician asks, and how to start.

## Safety and understanding

- [Safety and FAQ](https://vivokey.jp/safety-and-faq.html): The index to every guide on this site, and the questions, in one list with a search box.
- [What implants are](https://vivokey.jp/about-implants.html): What a microchip implant physically is, for a first-time reader: size, no battery, what people use it for, what it cannot do, and why there is more than one type.
- [Human microchip guide](https://vivokey.jp/human-microchip-japan.html): The beginner guide: what a human microchip implant really is, the questions people ask (tracking, medical device status, payment, who can order, pain and healing), and the path to installation in Japan.
- [NFC chip implant guide](https://vivokey.jp/nfc-chip-implant.html): NFC chip implants in Japan, the practical version: what a phone tap does, which uses need a specific reader, the NFC chip inside each product, and what to put in a first LINE message.
- [Access and DIY](https://vivokey.jp/doorlock.html): Smart locks, entry readers and DIY: identify the reader's frequency and protocol first, then pick the implant. NFC vs 125 kHz, NExT v2's LF side, the KBR1 desk reader, and a table of reader families.
- [Testing and evidence](https://vivokey.jp/testing.html): What was tested, under which conditions, and what each result establishes.
- [Medical device status](https://vivokey.jp/medical-device-status.html): VivoKey Japan's position on the regulatory status of its implants: passive NFC/RFID accessories sold and described for no medical purpose, read against intended use under Japan's 薬機法 (Article 2, Paragraph 4), and why installation is still done by a partner physician as VivoKey Japan's own standard.

## Company

- [Company](https://vivokey.jp/company.html): Who VivoKey Japan is: company facts, the timeline, the VivoKey Technologies and Dangerous Things ecosystem, what VivoKey Japan does and does not do, and registered company details.
- [Media](https://vivokey.jp/media.html): For journalists and producers: the topics VivoKey Japan can speak to, what to include in an enquiry, and how to reach us.
- [Legal disclosure and terms](https://vivokey.jp/terms.html): VivoKey Japan's legal disclosure under the Act on Specified Commercial Transactions: the seller, prices, bank transfer payment, delivery by installation voucher, refund conditions, and the warranty by product family (lifetime for the glass x-series and Apex Spectrum, 1 year for Apex Narrow and Module).
- [Privacy policy](https://vivokey.jp/privacy.html): VivoKey Japan's privacy policy: what personal information we collect when you order, what it is used for, what a partner physician receives to coordinate installation, and how to request disclosure, correction or suspension of your information.

## Facts

- Company: VivoKey Japan G.K. (合同会社), representative Ryuuzaki Julio, based in Chiba City, Japan; the registered address is on company.html. Business since 2020, G.K. since 2023-12-04.
- Contact: official LINE https://lin.ee/6AGqRid. Orders start on LINE. Payment is bank transfer only.
- Prices (tax included): Spark 2 ¥26,620; xSIID ¥29,480; NExT v2 ¥33,110; Apex Narrow ¥132,000; Apex Module ¥165,000; Apex Spectrum ¥159,500. The partner physician's installation fee is separate.
- Sizes: Spark 2 2.1 x 14 mm; xSIID 2.1 x 15 mm; NExT v2 3.1 x 15 mm (glass). Apex Narrow about 7.5 to 8 x 28 mm, 0.4 mm thick; Apex Module about 14 x 35 mm, 0.8 mm thick; Apex Spectrum 22 mm disc, 1.9 mm thick.
- LED colors: xSIID red or white (blue and green discontinued). NExT v2 green or blue (white by special request, red never made). Spark 2 has no LED.
- Partner physicians: in Tokyo and Miyagi, at three locations, referred to by area and letter because their names are not published. Partner physician A (Shinjuku-ku): ¥35,000 incl. tax, Weekdays (closed Tuesday and Wednesday), Card accepted, Partner since July 2024. Partner physician B (near Omori Station): ¥30,000 incl. tax, Weekends only, Cash only, Partner since April 2023. Partner physician C (around Kita-Yonbanchō Station, Aoba-ku, Sendai): ¥33,000 incl. tax, Any day, by advance appointment only, Card, QR code payment or bank transfer, Partner since September 2026. The ward is the area, not a name. Where to go and the contact are given on the installation voucher after the order is confirmed.
- Flow: choose on the site, order on LINE, pay by bank transfer. The installation voucher link is sent by official LINE within 24 hours of payment confirmation. Book with the partner physician yourself, bring the voucher and photo ID, the physician installs, pay the installation fee to the partner physician. One implant per order. Under 18, you can order with a parent or guardian's consent. Whether the installation can be done, and on what conditions such as a guardian being present, depends on the partner physician's policy, so please consult us on the official LINE before ordering.
- Refunds: cancel within 30 days of contract formation, whether or not you have booked an appointment, and we refund the product price less any actual cost the cancellation caused, such as return shipping; if installation cannot proceed for reasons not attributable to the customer, the refund is in full; no returns after installation.
- Warranty: Spark 2, xSIID, NExT v2, and other x-series by special order: limited lifetime warranty. Apex Narrow, Apex Module, and other flex products by special order: 1 year limited warranty. Apex Spectrum, and the d-series (dNExT, dT5) by special order: limited lifetime warranty. KBR1 USB reader, and other products delivered without installation: 90 day limited warranty. The flex terms are conditional on installation by a professional and video of the installation. All of these are the manufacturer's warranty, not ours. The replacement is determined by the manufacturer, under its warranty terms and product availability. The removal procedure fee is the customer's.
- What they are not: no battery, no GPS, no tracking, no payment or transit function, and not intended to have any medical effect. Passive NFC/RFID, powered only while a reader is held to it. Removable by a physician. They are not sold or described as medical devices and are not intended to diagnose, treat, prevent or cure anything; VivoKey Japan's position is that they do not fall within the definition of a medical device, which is the company's own reading and not a determination issued by the authorities.
- MRI: In short: Tell the imaging facility you have an implant when you book. Whether the scan goes ahead is their decision on the day. Before a scan: Ask us on official LINE for the manufacturer's advisory, and hand it to the imaging facility. Glass x-series: The manufacturer designates them all MR Conditional, which means the conditions are written down. Each has a small ferrite rod core in its antenna. The Dangerous Things x-series MR advisory allows up to 3 T, with the patient monitored throughout and the scan stopped at once if anything is felt. Spark 2: Spark 2 has its own statement: 1.5 T and 3 T, maximum spatial field gradient 40 T/m, Normal Operating Mode, whole body averaged SAR 2 W/kg, up to 60 minutes of continuous RF. Testing found no movement or displacement after implantation. On the image: Expect a local artifact around the implant. If that area itself has to be imaged, the manufacturer notes it may consider removal because of the artifact. Apex: Not covered by any of this. The manufacturer does not provide MRI data, a formal MR document, or an MR card for any Apex. It describes the flex products as having no ferrite core, but that describes how they are built; it is not a test result and not a safety statement. Tell your physician and the radiology staff before any scan. Biomagnets: A magnet implant must be removed before an MRI. We supply magnets by request only, and we say this plainly when we do.

## Optional

- [llms-full.txt](https://vivokey.jp/llms-full.txt): the full text of every page, English only
- [sitemap.xml](https://vivokey.jp/sitemap.xml)