Yubico YubiKey 5Ci is a versatile security key supporting multi-factor authentication across devices. It features dual connectors for Lightning and USB-C, making it compatible with iPhone, Android, and PC. Built from tough, waterproof, crush-resistant materials, it is designed for durability and high security standards. Programmed in the USA with firmware 5.7, it supports FIDO2, WebAuthn, OTP, PIV, and OpenPGP, ensuring phishing-resistant protection. The device is factory-sealed, supporting over 1000 accounts including email, password managers, and enterprise services. Its compact size (1.6 in x 0.5 in x 0.2 in) and ambidextrous design make it suitable for everyday use and travel. Supports MFA, supports multiple accounts, and is manufactured in Sweden, supporting high security compliance. Ships tracked from USA, arrives in 11-13 days.