Utilizing a transaction card to provide secondary authentication for accessing a secure application with a user device

A method, comprising:

• receiving, by a transaction card and from a user device, a signal when the transaction card is within a threshold proximity of the user device,
• wherein the signal is associated with a request to access an application of an application platform;
• energizing, by the transaction card and based on receiving the signal, a near-field communication (NFC) component of the transaction card;
• generating, by the transaction card, an encrypted code based on the NFC component being energized;
• and
• providing, by the transaction card, the encrypted code to the user device,
• wherein the encrypted code provides authentication to access the application.

A user device, comprising:

• one or more memories;
• and
• one or more processors, communicatively coupled to the one or more memories, configured to cause the user device to:
• generate a signal associated with a request to access an application of an application platform;
• receive, in response to the generated signal and based on a transaction card being within a threshold proximity to the user device, an encrypted code from the transaction card;
• perform one or more actions to verify the encrypted code;
• and
• access, based on verification of the encrypted code, the application,
• wherein the encrypted code provides authentication to access the application.