#felica — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #felica, aggregated by home.social.
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Important features really don't trickle down on #Android land lol. Bizarre to me how ure 'advertising' fast refresh rate screens, 'triple cameras', (garbage) under-glass fingerprint scanner, and yet the phone has no eSIM support in 2026, something that has been available on #iPhone since the XR/XS in 2018.
I've even seen some that don't have NFC (again, available since iPhone 6 in 2014). Not to mention other nice to haves borderline essentials like #FeliCa being integrated on all iPhones (since iPhone 8) but not on Android phones unless you bought one spec from the Japanese market.
Istg, it's almost like #Apple specs their phones with future-proofing for REAL use-cases in mind, while Android manufacturers specs their phones for buzzwords. And before anyone even thinks this - no, iPhones aren't more expensive than these shitty, 'mid-range' Android phones. ~1-3 gen older models get heavily discounted online, brand new - and are often dirt cheap used (and getting them used is actually viable/safe unlike with most Android phones). And unlike most Android phones, these iPhones even when they're not the latest - still sports very capable flagship chips of their time, not shitty mid-range SOCs. -
Critical vuln(s?) found in FeliCa contactless RFID smart cards for payment and ID shipped before 2017, Sony admits
https://www.sankei.com/article/20250828-SKORFRXOVBKMBMAEXZNVCRNHQA/
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Japan's IC cards are weird and wonderful
Link
日本的 IC 卡系統奇妙且獨特
https://arbitraryurl.example/japans-ic-cards-are-weird-and-wonderful
📌 Summary:
文章介紹日本 IC 卡系統的獨特之處，尤其是以 Sony 開發的 FeliCa 技術為核心，與西方普遍使用的 MIFARE 及 EMV NFC 技術形成鮮明對比。FeliCa 不僅在速度上遠優於西方標準，能迅速通過站閘，且透過卡內儲存價值與交易紀錄，加速交易流程，避免因依賴伺服器溝通而拖慢速度。作者分享了 FeliCa 技術的歷史背景，從香港的八達通卡開始推廣，後來被日本 JR 東日本的 Suica 卡及樂天 Edy 卡採用，並延伸至亞洲多國。文中也探討 Osaifu-Keitai（手機電子錢包系統）與 FeliCa 的關係，說明現代手機需搭載 NFC-F 支援並具備安全元件（Secure Element）方能模擬 IC 卡，且 Android 與 Apple 手機在此功能上的差異。最後，文章分別評估了 FeliCa 卡的安全性，指出其基於硬體加密與單卡專屬密鑰設計，對複製及重播攻擊具高度抵抗力，且監控系統能透過熱點名單控管異常，提升整體防護。文末作者對未來可能的研究方向與愛好專案提出構想，期望深入軟硬體整合及提升讀寫速度。
🎯 Key Points:
→ NFC 基礎知識與類型：
NFC 使用 13.56 MHz 無線通訊，根據 ISO/IEC 14443 規範分為多種標準。
EMV 為歐洲聯合 Mastercard 與 Visa 的支付標準，多用於信用卡及行動支付。
MIFARE 系列卡片多用於門禁與公共交通，早期 MIFARE Classic 安全性差，易被複製。
→ FeliCa 技術與應用：
Sony 1988 年開發的 NFC-F 標準，早於 MIFARE（1994 年），主要用於日本及亞洲公共交通。
交易速度高達 424 kbps，交易時僅卡與讀卡機互動無需外部伺服器，提高通過效率。
卡片自身儲存餘額與交易紀錄，並具備多卡衝突迴避功能，避免同時讀取錯亂。
→ Osaifu-Keitai 與手機模擬 IC 卡：
Osaifu-Keitai 為日本 NTT Docomo 發展的手機電子錢包系統，利用手機內 Secure Element 儲存密鑰。
所有現代支援 NFC 的手機均含 NFC-F，但並非所有設備都具 Osaifu-Keitai 功能，主要與安全元件密鑰與授權有關。
Apple 裝置全線支援 Osaifu-Keitai 功能，Android 多依產地（日本或全球版）及授權情況有所不同。
→ 安全性評估：
FeliCa 採用專有加密，卡內每張皆有獨立密鑰，防止卡片複製與重播攻擊。
雖然加密細節不公開，但公開資料顯示成功攻擊稀少且大多被系統及時偵測。
讀卡終端也設定有熱點名單用於封鎖異常卡片，並將交易紀錄回傳中央，確保系統完整性。
離線終端（如販賣機）因未即時上傳紀錄，可能成為防護盲點。
→ 未來展望：
作者計劃自行打造微型車站軟硬體系統，模擬整套票務運作，當作娛樂與學習專案。
希望能進一步瞭解 FeliCa 讀寫速度背後物理特性，探索優化 NFC 反應時間的可能性。
🔖 Keywords:
#FeliCa #IC卡 #Osaifu-Keitai #NFC #日本公共交通 -
🎮 Hack NFC. Emulate transit. Play arcade.
We're building a userland Linux implementation of Android’s NFC-F (FeliCa) Host Card Emulation—so your Linux device can act like a real Japanese contactless card!
That means:
- Emulate Suica/PASMO-style transit cards 🛤️
- Log into arcade games:
- SEGA Performai (maimai, CHUNITHM, O.N.G.E.K.I) via Aime
- Konami e-Amusement (beatmania IIDX, GuitarFreaks, DrumMania, DDR, Sound Voltex, DanceRush Stardom)
- Bandai Namco BaNaPassport titles (Taiko no Tatsujin, Wangan Midnight Maximum Tune)
- SEGA's Initial D Arcade Stage series
We're looking for reverse engineers, Linux hackers, and Arcade fans to help bring Secure NFC emulation to Linux. Let’s make your laptop or Linux phone your next arcade pass!
#nfc #nfcf #felica #linux #hardwarehacking #opensource #arcade #reverseengineering #performai #aime #eamusement #banapass -
Looking for aspiring Linux hardware and software hackers to work on NFC-F/FeliCa (Secure NFC) support in Linux! We're interested!
Imagine Linux emulating transit cards— also logging into SEGA (Aime), Namco (BaNaPassPort), Konami (e-Amusement) arcade games!
Join us @hq and let's turn Linux phones into transit (or arcade) cards! Let's ride the train, on Linux! #nfc #nfcf #felica #linux #hardwarehacking -
Anyone knows if the OnePlus 11 phone supports Japanese Suica (FeliCa) card-app (not sure what the right term is) ? If so, which app is the "best" ?