A passwordless login system enhances security and user convenience by eliminating the need for clients to remember and manage passwords. Instead, clients can access the portal using secure methods such as magic links sent via email, biometric authentication (e.g., fingerprint or facial recognition), or one-time passwords. This reduces the risk of password-related breaches and simplifies the login process for clients, making it easier for them to access their information. For example, Financial Cents uses a secure magic link that clients can click to gain instant access to the portal, saving them the hassle of remembering passwords and improving their overall user experience.