---
title: "lockDSFID(requestFlags:completionHandler:)"
framework: corenfc
role: symbol
role_heading: Instance Method
path: "corenfc/nfciso15693tag/lockdsfid(requestflags:completionhandler:)"
---

# lockDSFID(requestFlags:completionHandler:)

## Declaration

```swift
func lockDSFID(requestFlags flags: NFCISO15693RequestFlag, completionHandler: @escaping @Sendable ((any Error)?) -> Void)
```

```swift
func lockDSFID(requestFlags flags: NFCISO15693RequestFlag) async throws
```