Abstract: In example embodiments, a method of limiting access to a gaming system is disclosed. Encoded content is embedded into an image presented by an application executing on a client device. The image is captured into an image buffer. The encoded content is retrieved from the image. A login request is sent to the gaming system. The login request includes the encoded content. A login response is received from the gaming system. The login response includes a success status. The success status is based on a verification of the encoded content. A notification of the success status is presented in a user interface on the client device.