# replyPINCode(_:pinCode:) This is the required reply to the devicePairingPINCodeRequest delegate message. Set the PIN code to use during pairing if required. ``` func replyPINCode(_ PINCodeSize: Int, pinCode PINCode: UnsafeMutablePointer!) ``` ## Parameters `PINCodeSize` The PIN code length in octets (8 bits). `PINCode` PIN code for the device. Can be up to a maximum of 128 bits. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)