To scan a passport's NFC chip with a mobile phone, you need an NFC-capable device—most modern iPhones and Android phones have this hardware—plus a specialized app such as ReadID, NFC Passport Reader, or an official government immigration app [1][2]. The passport must be an e-passport or biometric passport, identifiable by the NFC/RFID symbol on the cover [2].

Before scanning, enable NFC in your phone settings. On iPhones, NFC is typically active by default for apps that request it; on Android, toggle it on in Connected Devices or Network settings [1]. Remove any thick phone cases or passport covers, as these can block the NFC signal [2][3].

The scanning process usually requires you to first capture the machine-readable zone (MRZ)—the two or three lines of text at the bottom of the photo page—using your phone's camera [1][4]. This step is essential because the app uses this data to generate a digital key that unlocks the chip for security reasons [1]. Once the app has this information, it will prompt you to scan the chip itself.

Place your phone flat against the passport and move it slowly until the app detects the chip [2][5]. The NFC antenna location varies by phone: on iPhones it is usually near the back camera; on Android devices it is often on the back near the top or middle [2]. The chip location also varies by passport—commonly in the inside back cover, data page, or front cover—and the app often indicates the correct placement [3][6]. Keep the phone still during the scan, which typically takes five to ten seconds [1]. If the connection fails, try removing cases, scanning a different spot on the passport, or moving the phone more slowly [2][5].