Site Policy

The KDDI website ("Website" hereinafter) is operated by KDDI CORPORATION ("KDDI" hereinafter). Before using this Website, please read and consent to the following usage conditions.

  • Please be aware that Site Policy and related regulations may change without prior notice.


KDDI does not provide any guarantee whatsoever regarding the completeness and accuracy of the information that appears on this Website. KDDI may change the information appearing on this Website without prior notice.

KDDI and all affiliated companies bear absolutely no liability in any form for any direct or indirect losses incurred as a result of using any of the information or content contained in this Website.

Copyrights & Trademarks

The copyrights to all text, images, logos, photographs, videos and animations, software, and all other information contained in the Website belong to KDDI or a third party.

You shall not use (including copying, altering, distributing, and sending to the general public) this information without obtaining the prior consent of the copyright owner, unless acceptable under copyright law, such as in the case of private use.

KDDI product or service names appearing on this Website are KDDI trademarks or registered trademarks.

Linking to this Web site

In principle, linking to this Web site is permitted from any commercial or non-commercial purpose. However, a link this Web site is prohibited on any website that falls into, or may be categorized, as any of the following.

  • Websites that include content intended to slander or injure the reliability of KDDI, another company (or individual), or another organization
  • Websites that engage in or may possibly engage in conduct that infringes upon the intellectual property rights, such as copyrights or trademark rights, or assets, privacy, right of portrait, or any other rights of KDDI, another company (or individual), or another organization
  • Websites that make it unclear that the displayed content is KDDI content or have the possibility of misrepresenting to a third party through a method such as displaying this Website within a frame (KDDI requests that you set links to this Website so that either the browser window changes completely to the destination page or the destination page opens up in a new browser window)
  • In addition to the above, any website which engages in conduct that violates laws and ordinances, including acts, regulations, or rules, or goes against generally accepted rules of morality or conduct that interferes with the operation of this Website's service

KDDI does not authorize the posting of links using registered trademarks, such as logos and marks owned by KDDI, without permission. KDDI does not allow the posting of links in such a way as to misidentify the information source.

Please be aware that KDDI may change the URL for this Website and is not able to send notification to your website.


KDDI has issued a Security Statement based on its Basic Policy Regarding Information Security (established in FY 2004). In addition to disclosing this Statement both within and outside the company, KDDI pledges to comply with this Statement in accordance with Privacy Policy compliance.

Recommended Environment

For a safer and more pleasant experience, KDDI recommends that you view this Website on one of the following browsers.

Windows (7/XP/Vista)

icon: Microsoft Internet Explorer

Microsoft Internet Explorer 8.0 or higher

icon: Mozilla Firefox

Mozilla Firefox latest version

icon: Google Chrome

Google Chrome latest version

Macintosh (Mac OS X 10.6 or higher)

icon: Safari

Safari 5.0 or higher


Adobe Flash Player (Flash Player 9.0.115 or higher) is required to view some pages in this Website.

Also, Adobe Reader (Acrobat Reader 7.0 or higher) is required to view and print PDF files and a digital media player like RealPlayer, RealOne Player, or Microsoft Windows Media Player is required to view and listen to video clips.

  • The newest versions are required for some pages.


This Website uses cookies in order to make your experience at this Website more convenient and in order to enable us to continually improve the Website.

A cookie is a piece of information regarding the operation of this Website that is sent to your browser from the server and stored on your computer.

Cookies do not have any direct adverse effect on your computer.

KDDI may use our own cookies or the cookies of a third-party company with which KDDI has a subcontracting agreement, in order to track the access status of this Website.

You can refuse to accept cookies by changing the settings in your browser. Doing so will not greatly impair your ability to view this Website. To learn how to change your browser settings, please consult the help page of your browser, or contact the manufacturer.

About access data

This Website contains pages that are embedded with collection tags used to tally the access status of visitors to the Website. Access status includes the URL(s) of the page(s) accessed, the date and time of access, information that identifies the browser, etc.

KDDI uses this access data to improve customer convenience and to maintain and improve the quality of the Website. In addition, combining access data with cookies and a personal identifier conferred by KDDI (KDDI identifier) as well as customer attribute information enables us to display on the Website information that may be beneficial to the individual customer.

You can disable (opt out of) this feature via the opt-out page of the company given below. Doing so will stop the use by us of the KDDI identifier and your customer attribute information on this Website.

Open link in a new opt-out page

About cookie-based advertisement distribution by third-party advertisement distributors

KDDI's advertisements appear on various Internet websites due to our tie-ups with a number of third-party advertisement distribution companies.

These third-party advertisement distribution companies distribute these advertisements using cookies, access data, KDDI identifiers and customer attribute information. The information used by the advertisement distribution companies is processed by KDDI so that no individual customer can be identified by any advertisement distribution company.

By accessing the opt-out page of each of the advertisement distributors listed below, you can disable this feature and prevent the use of cookies and access data by the advertisement distributors.

KDDI handles cookies, access data, KDDI identifiers and customer attribute data appropriately in line with the Privacy Policy determined by KDDI Corporation.


This Website uses JavaScript for some of the contents in order to provide a more enjoyable experience for the user.

Please be aware that if you do not have JavaScript turned on in your browser settings, some contents may not display or operate properly.


In order to increase the security level, this Website uses SSL (Secure Socket Layer) encrypted transmission for some services. Your web browser must be compatible with 128 bit SSL in order to use those services.

Using a web browser compatible with security functionality allows you to send and receive automatically encrypted private information such as your real name, postal address, and phone number.
This way, there is absolutely no worry about information theft even in the unlikely event that a third party is able to intercept the data you send.

Also, you might not be able to use these pages depending on your settings, such as a firewall setting.
Refer to the VeriSign Japan website for detailed information about SSL and browser compatibility.