NFC and near-field communication in modern IDs

NFC (near-field communication) is increasingly present in identity documents, though its implementation varies significantly between document types and jurisdictions. Here is a clear overview of where NFC appears and what it contains.

NFC in passports

The biometric (e-passport) chip present in all modern US passports issued since 2007 uses ISO 14443 NFC technology. The chip contains a digital version of the biographical data page (name, DOB, passport number), a biometric photograph, and a digital signature from the issuing government. The signature allows verification that the data has not been tampered with. The chip is passive — it only communicates when an NFC reader is near.

Passport NFC data is encrypted and requires the chip's cryptographic key to read. The key is derived from data printed on the passport's machine-readable zone, meaning you physically need the passport to unlock its own chip data. This prevents skimming attacks where someone reads your passport chip without handling the document.

NFC in US driver's licenses

Standard US driver's licenses do not contain NFC chips. Some states have begun issuing optional mobile driver's licenses (mDLs) — digital ID credentials stored on a smartphone — which use NFC as a transfer mechanism for identity verification. As of 2026, mDL issuance is active in a small number of states with more in pilot phases.

What this means for verification

For the near-term future, ID verification at standard venues (bars, liquor stores, dispensaries) remains barcode and visual-check based because the checking equipment does not read NFC. The shift to NFC-based verification would require significant hardware investment at the venue level. The mDL ecosystem is developing but is not yet the primary verification method in any US market.

US states currently issuing mobile driver's licenses (mDL) include a growing list — Arizona, Colorado, Georgia, Maryland, and others — but mDL acceptance at venues is still limited. Most bars and clubs do not yet have mDL reader infrastructure. The NFC and QR-based verification methods that mDLs use require specific reader hardware and app support from the checking party. Physical card verification remains the dominant method for the foreseeable future in most market contexts.