Which of the following is an example of how you interact with OAuth on a daily basis?

You sign into Facebook by tapping a message in your Facebook mobile app.

You sign into a shopping site with your Google login information.

You sign into your email by receiving a 6-digit code through text message.

You scan a QR code from your WhatsApp mobile app to log into WhatsApp on your computer.


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Explanation: The correct answer is You sign into a shopping site with your Google login information. OAuth (Open Authorization) is a widely-used authentication protocol that allows users to grant third-party applications limited access to their resources without sharing their credentials directly. When you sign into a shopping site using your Google login information, you are leveraging OAuth in action. The shopping site, acting as the client application, redirects you to Google’s authentication server, where you input your credentials. Google then prompts you to authorize the shopping site to access certain information or perform actions on your behalf. Once you grant permission, Google issues an access token to the shopping site, allowing it to authenticate you and access the requested resources, such as your name and email address, without exposing your Google password to the site. This process enhances security by minimizing the exposure of sensitive credentials while still enabling seamless and convenient access to various services and applications. The other options describe different authentication methods, such as traditional username/password login, two-factor authentication via text message, or QR code scanning, but they do not directly involve OAuth-based interactions between third-party applications and authentication providers like Google, making them less relevant examples in the context of OAuth usage in daily activities.

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