Passkeys as a Secure Alternative to Passwords

Passwords are increasingly regarded as insecure and cumbersome. Experts recommend replacing them with passkeys, which are not only more secure but also enhance user experience. Passkeys do not need to be memorized and can be stored directly on smartphones. A key advantage of passkeys is their resistance to phishing. In the event of a data breach, the login credentials cannot be used by others, as passkeys consist of a public and a private key.

The private key remains on the user's device or in a password manager, while the public key is transmitted to the respective website. The functionality of passkeys is based on asymmetric encryption. When a passkey is created, a public and a private key are generated. The private key is secured through biometric authentication such as fingerprint or facial recognition, providing additional security. Passkeys can be stored locally on a device or in the cloud.

Supported devices include smartphones, tablets, hardware dongles like YubiKeys, and compatible PCs. This flexibility allows users to manage and use passkeys in various ways. When logging into a website, a request is sent to the device to initiate the verification process. The user must then provide their biometric data for authentication. Upon approval, a digital signature is created and sent to the website to grant access.

Another advantage of passkeys is that they only work for the specific website for which they were created. This protects against theft by fake or malicious websites, which are often used in phishing attacks. The implementation of passkeys could significantly improve security on the internet. Transitioning to passkeys could also reduce the need for regular password changes. Users no longer need to worry about the complexity and security of their passwords, greatly enhancing the user experience.

The security of passkeys could lead to faster adoption of this technology by businesses and users. However, the use of passkeys is not without challenges. Users must ensure that their devices and password managers support the technology. Additionally, reliance on biometric data may raise privacy concerns.

The introduction of passkeys is being driven by various companies and organizations. Support from major platforms could be crucial in promoting user acceptance. According to a 2025 survey, over 60% of companies plan to implement passkeys within the next two years. The security vulnerability CVE-2026-1234 affects approximately 50,000 systems in Germany, underscoring the urgency of transitioning to more secure authentication methods.