Almost two months after it was first announced, Yubico has launched the YubiKey 5Ci, a security key with dual support for both iPhones, Macs and other USB-C compatible devices.

Yubico’s latest Yubikey is the latest iteration of its security key built to support a newer range of devices, including Apple’s iPhone, iPad, and MacBooks in a single device. Announced in June, the company said the security keys would cater for cross-platform users — particularly Apple device owners.

These security keys may be small enough to sit on a keyring, but they contain the keys to your online line. Your Gmail, Twitter, and Facebook account all support these plug-in devices as a second-factor of authentication after your username and password — a far stronger mechanism than the simple code sent to your phone.

Security keys offer almost unbeatable security and can protect against a variety of threats, including nation-state attackers.

Jerrod Chong, Yubico’s chief solutions officer, said the new key would fill a “critical gap in the mobile authentication ecosystem,” particularly given how users are increasingly spending their time across a multitude of mobile devices.

The new key works with a range of apps, including password managers like 1Password and LastPass, and web browsers like Brave, which support security key authentication.