Act for the Prevention of Illegal Mobile Phone Use requires mobile voice communication carriers to verify the identity of subscribers when a contract is terminated or transferred.

The amendment of the Copyright Act (Act No. 48 of 1970) adopted regulations on "index sites" that contain links leading to infringing content. It is reported that due to the requests for content removals and blocking, ISPs must monitor the customer's online activity to determine whether they are accessing the sites in question.

Chapter 4 of the Act on Development of an Environment that Provides Safe and Secure Internet Use for Young People (Act No. 79 of 2008), which became effective in April 2009, provides an obligation to provide service to filter content harmful to young people. The Act imposes this obligation not only for Internet service providers and mobile network service providers but also for manufacturers of equipment with functions to access the Internet, such as smartphones, as a result of the amendment that came into effect in 2018.

Japan has introduced import restrictions on certain goods from Russia under the Foreign Exchange and Foreign Trade Act. The Ministry of Economy, Trade and Industry has amended its public notice, based on Art. 52 of the Foreign Exchange and Foreign Trade Act and Art. 3 of the Import Trade Control Order. This amendment subjects the import ban to approval under Art. 4 of the same Order. The items affected by this approval procedure include automatic data-processing machines and related units (HS 84.71), as well as parts and accessories for office machines like computers and printers (HS 84.73), among others.

As amended in April 2022, under Art. 2.4 of the Cabinet Order on Export Trade Control, anyone wishing to export goods listed in Table 2-3 to Russia must obtain approval from the Minister of Economy, Trade and Industry, following the procedures established by the Ministry's Order. Table 2-3 includes several ICT goods, such as computers and their accessories, communication devices, cryptographic equipment, integrated circuits, semiconductor devices, electronic test equipment, analogue and digital recording devices, oscilloscopes, and components for microwave and millimetre wave equipment.

The type of conformity assessment procedure adopted is the Supplier's Declaration of Conformity (SDoC) type 2 - the supplier or manufacturer of the equipment declares the equipment meets the technical and administrative requirements on the basis of test reports by a testing laboratory recognised by the regulator. No registration of the equipment with the regulator is required. This mandatory requirement is limited to EMI for the products covered by the Electrical Appliance and Material Safety Law.
The Act divides electrical products into specified and non-specified products. While specified electrical products such as AC adapters and electric massagers require third-party assessment by a registered conformity assessment body (CAB), non-specified electrical products are subject to a self-declaration scheme for mandatory PSE marks.
Similarly, under the Consumer Product Safety Act (Act No. 31 of 1968), some electrical products classified as special specified products because of high risk to consumer safety require a third-party assessment by a registered CAB, while specified products with moderate risk to consumer safety are subject to self-declaration for PSC mark.

A business operator must retain information for electronic transactions for seven years (Art. 10, Act on Special Provisions concerning Preservation Methods for Books and Documents Related to National Tax Prepared by Means of Computers (Act No. 25 of 1998).
A business operator who uses e-mail for advertising must preserve documents that evidence consent from receivers to send such email prior to the transmission (Art. 3.2), Act on Regulation of the Transmission of Specified Electronic Mail (Act No. 26 of 2002).

Japan's Act on the Limitation of Liability for Damages of Specified Telecommunications Service Providers and the Right to Demand Disclosure of Identification Information of the Senders establishes a safe harbour regime for intermediaries for copyright infringements. According to Art. 3 of the Act, no Internet service provider (ISP) may be held liable for failing to delete infringing content. Furthermore, the Act also shields ISPs from the liability for any damage caused by the deletion of content on its network if the ISP reasonably believes that the content infringes the intellectual property rights or privacy of others or if a third party alleges infringement and the content sender does not respond to the ISP's inquiry within seven days.

The Unfair Competition Prevention Law (Law No. 47 of 1993) provides a framework for the effective protection of trade secrets. A ‘trade secret’ is defined in the law as a production method, sales method, or any other technical or operational information useful for business activities that are kept secret and are not publicly known (Art. 2). According to Art. 3 of the law, those businesses or persons whose business interests have been, or are threatened to be, infringed on by misappropriation or illegal disclosure shall have the right to seek an injunction. The Unfair Competition Prevention Act provides civil and criminal remedies in such cases where secret information about the company is stolen or disclosed illegally. To protect information according to the Act, companies need to manage such data as “trade secrets”.

It is reported that there is an obligation for passive infrastructure sharing in Japan to deliver telecom services to end users.

According to Arts. 4-6 of the Act on Nippon Telegraph and Telephone Corporation (Act No. 85 of 1984), foreigners' aggregate ownership cannot exceed one-third of the aggregate voting rights of Nippon Telegraph and Telephone Corporation (NTT), which holds all the issued shares of NTT-East and NTT-West.

Nippon Telegraph and Telephone Corporation (NTT) is incorporated under the Act on Nippon Telegraph and Telephone Corporation, etc. (Act No. 85 of 1984) (NTT Act). NTT, being the incumbent in the telecommunications industry, is partly owned by the Japanese government with 36% of its stock.

It is reported that Japan mandates functional and accounting separation for operators with significant market power (SMP) in the telecom market.

Under the Radio Act (Act No. 131 of 1950) (電波法 (昭和二十五年法律第百三十一号), the allocation of the spectrum is at the discretion of the Ministry of Internal Affairs and Communication (MIC), based on consultation with the Radio Regulatory Council and consideration of plans submitted by the operators. The Act was amended in May 2019 to adopt what is called a "partial auction system," whereby the MIC considers the amount of special fees submitted by the applicant based on their own valuation of the spectrum, although it is not a decisive element. It is reported that the MIC's decision-making is arbitrary and opaque. Moreover, it reported that "several current spectrum allocations create bands unique to Japan (e.g., for self-driving vehicles) that prevent foreign technologies from functioning in Japan".

Japan has appended the World Trade Organization (WTO) Telecom Reference Paper to its schedule of commitments.