NFC card reader — phone NFC & ACR122U USB · brand, expiry, APDU console
Nfc Reader — description
Turn your Android phone — or an external ACR122U USB reader — into a precise tool for inspecting contactless EMV cards and NFC chips. From install to your first read takes seconds, with no account and no setup headaches.
Two ways to read
✓ Phone NFC — hold a contactless card to the back of your phone
✓ ACR122U over USB — plug in the popular ACS ACR122U for desktop-grade reads
What you get
• Card brand (Visa, Mastercard, Amex…), expiry, and a safely masked card number
• Clean "instrument panel" UI with light & dark themes
• Live diagnostics — every command/response with decoded status words (9000 OK…)
• Manual APDU console: raw commands, presets (SELECT PPSE, SELECT AID, READ RECORD…)
• Full ACR122U session control: connect → power (ATR) → set protocol → transmit
Built for trust
🔒 Card numbers masked by default and never stored
🔒 Everything stays on-device — no account, no cloud, no tracking
🔒 Reads only publicly available data, for inspection and diagnostics
Two ways to read
✓ Phone NFC — hold a contactless card to the back of your phone
✓ ACR122U over USB — plug in the popular ACS ACR122U for desktop-grade reads
What you get
• Card brand (Visa, Mastercard, Amex…), expiry, and a safely masked card number
• Clean "instrument panel" UI with light & dark themes
• Live diagnostics — every command/response with decoded status words (9000 OK…)
• Manual APDU console: raw commands, presets (SELECT PPSE, SELECT AID, READ RECORD…)
• Full ACR122U session control: connect → power (ATR) → set protocol → transmit
Built for trust
🔒 Card numbers masked by default and never stored
🔒 Everything stays on-device — no account, no cloud, no tracking
🔒 Reads only publicly available data, for inspection and diagnostics
What's new
A full redesign and a real APDU console!
• New "Instrument Panel" look — light & dark themes
• Redesigned card view: brand, expiry & masked number with tap-to-reveal
• Manual Mode is now a working APDU console: connect, power, set protocol, send commands, read decoded responses
• Live diagnostics with TX/RX + status-word decoding
• New Settings screen
• Card numbers masked by default, never stored
• Edge-to-edge layout & system-bar fixes
• New "Instrument Panel" look — light & dark themes
• Redesigned card view: brand, expiry & masked number with tap-to-reveal
• Manual Mode is now a working APDU console: connect, power, set protocol, send commands, read decoded responses
• Live diagnostics with TX/RX + status-word decoding
• New Settings screen
• Card numbers masked by default, never stored
• Edge-to-edge layout & system-bar fixes
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