https://techcrunch.com/2018/05/22/yubico-launches-an-sdk-that-lets-ios-devs-add-support-for-its-nfc-keys/

Yubico, the company behind the increasingly popular YubiKey security keys, today announced the launch of a new SDK for iOS developers that allows them to add support for two-factor authentication over NFC with the company’s YubiKey NEO keys. With this, the company now offers solutions for all the major platforms. The first company to support this new feature, by the way, is LastPass, which already supported the Yubico one-time passwords over NFC on Android.

While it was already possible to build an integration with the YubiKey NEO once iOS 11 launched, the new SDK will make it significantly easier for more developers to support these keys over NFC.