Number authentication, which typically involves verifying a user's identity through their phone number via methods like SMS or voice calls, cannot completely replace mobile phone verification codes (MVCs) for several reasons:
Security: While number authentication adds a layer of security, it is not foolproof. Attackers can still intercept SMS messages or compromise phone numbers through SIM swapping attacks. MVCs, especially those that are time-sensitive and single-use, offer a higher level of security.
User Experience: MVCs can be more user-friendly as they often involve entering a code sent via SMS or email, which is straightforward and widely understood. Number authentication might require additional steps or equipment, such as a phone call or a specific app.
Accessibility: MVCs are accessible to users regardless of whether they have a smartphone or not. Number authentication methods that rely on apps or specific hardware might not be as accessible to all users.
Regulatory Compliance: In some jurisdictions, regulations might require the use of MVCs for certain types of transactions or data access due to their proven track record in security and compliance.
Example: A user trying to log into their online banking account might receive a time-sensitive code via SMS to enter on the login page. This MVC ensures that even if someone knows the user's login credentials, they cannot access the account without the code.
Recommendation: For enhanced security and compliance, consider using a combination of number authentication and MVCs. Tencent Cloud offers services like Tencent Cloud Authentication, which provides multi-factor authentication solutions that can include both number authentication and MVCs to ensure robust security measures.