# 割賦販売法 / Installment Sales Act — 第三十五条の十七の十五 (Article 35-17-15) This is the Markdown twin of https://japanlaw.org/en/installment-sales-act/art-35-17-15. Every law, and how to address a provision: https://japanlaw.org/llms.txt. The same laws as MCP tools (no sign-in): https://japanlaw.org/mcp. - Law: 割賦販売法 (Installment Sales Act), 昭和三十六年法律第百五十九号 - English title "Installment Sales Act": Ministry of Justice translation - Kind: Act — the distinction between 法律 (Act), 政令 (Cabinet Order), 省令 (Ministerial Order) and 条例 (local ordinance) decides who may issue it and what it may say. - Provision: 第三十五条の十七の十五 (Article 35-17-15)（クレジットカード番号等の不正な利用の防止） — address `art-35-17-15` - Text in force since: 2025-06-01 - URL (the page that opens at this provision): https://japanlaw.org/en/installment-sales-act/art-35-17-15 - Permanent URL (e-Gov law ID, never renamed): https://japanlaw.org/l/336AC0000000159/art-35-17-15 - Every provision below carries its address and both URLs on the line under it. - Japanese text: e-Gov 法令検索, Digital Agency (デジタル庁). English: as marked on each line below. Only the Japanese as published by the government has legal effect; the text below is a copy of it. Every English rendering below is a translation and says which kind: the Ministry of Justice's translation, or this site's machine translation, whose model and date the Sources list names. They are never merged and never substituted for one another. --- ### 第三十五条の十七の十五（クレジットカード番号等の不正な利用の防止） — (Prevention of Illegal Use of Credit Card Numbers) caption: Ministry of Justice translation — Japanese Law Translation Database System art-35-17-15 · https://japanlaw.org/en/installment-sales-act/art-35-17-15 · https://japanlaw.org/l/336AC0000000159/art-35-17-15 **第一項** クレジットカード等購入あつせん関係販売業者又はクレジットカード等購入あつせん関係役務提供事業者は、経済産業省令で定める基準に従い、利用者によるクレジットカード番号等の不正な利用を防止するために必要な措置を講じなければならない。 art-35-17-15/par-1 · https://japanlaw.org/en/installment-sales-act/art-35-17-15/par-1 · https://japanlaw.org/l/336AC0000000159/art-35-17-15/par-1 A seller affiliated with the intermediation of credit card purchase or service provider affiliated with the intermediation of credit card purchase must take necessary measures for prevention of illegal use of credit card numbers by users, in accordance with the standards specified by Order of the Ministry of Economy, Trade and Industry. Ministry of Justice translation with a slip corrected by this site — not the Ministry's text; the Ministry printed: "A seller affiliated with the intermediation of credit card purchase or service provider affiliated with the intermediation of credit card purchase must take necessary measures for prevention of illegal use of credit cards by users, in accordance with the standards set by the Ministry of Economy, Trade and Industry." — https://www.japaneselawtranslation.go.jp/en/laws/view/4837/tb ## Cited by 2 provisions cite this one. No official source publishes this direction. - 割賦販売法 第三十五条の十七の八第二項（クレジットカード番号等取扱契約締結事業者の調査等） — https://japanlaw.org/en/installment-sales-act/art-35-17-8/par-2 · https://japanlaw.org/l/336AC0000000159/art-35-17-8/par-2 - 割賦販売法 第三十五条の十七の八第四項（クレジットカード番号等取扱契約締結事業者の調査等） — https://japanlaw.org/en/installment-sales-act/art-35-17-8/par-4 · https://japanlaw.org/l/336AC0000000159/art-35-17-8/par-4 --- ## Sources - claude-opus-5-5 — Corrections to the Ministry of Justice's English of the Installment Sales Act, written 2026-11-03 - e-Gov 法令検索, Digital Agency (デジタル庁) — 割賦販売法 — the text in force from 2025-06-01 (https://laws.e-gov.go.jp/law/336AC0000000159/20250601_504AC0000000068), retrieved 2026-11-02 - Japanese Law Translation Database System, Ministry of Justice (法務省) — Installment Sales Act (割賦販売法), Article 35-17-15, paragraph (1) — the Ministry of Justice's English as printed (https://www.japaneselawtranslation.go.jp/en/laws/view/4837/tb), retrieved 2026-11-02 - Japanese Law Translation Database System, Ministry of Justice (法務省) — Installment Sales Act — Ministry of Justice translation (https://www.japaneselawtranslation.go.jp/en/laws/view/4837/tb), retrieved 2026-11-02 - This site's parser, version 222 — 割賦販売法 — structure, counts, cross-references and defined terms, computed 2026-11-02