With the ReadID NFC app you can read the NFC chip that is in your passport or identity card, using the NFC capability of your iPhone (iPhone 7 or later).
This app is based on ReadID, a mobile identity document verification technology. It can read and verify the authenticity of identity documents that have a chip, which includes most passports and many identity cards. Before being able to read the chip, the app first needs to scan the so-called Machine Readable Zone of the identity document since this contains the password needed to get access to the chip.
This app works client-only, meaning that the personal data from your identity document does not leave your phone.