Abstract: A method, system, and computer readable storage to implement a skill based video game wagering system. Different video games can be implemented, and within each video game, a player's skill can affect the award model that is initiated when the player takes an action to earn an award (e.g., successfully destroying a target). Upon each award model being initiated, a credit cost is deducted from the player's credit meter, and then award model is activated which can generate an award, or a value of zero which is a loss for the player.

Abstract: A method, system, and computer readable storage to implement a skill based video game wagering system. Different video games can be implemented, and within each video game, a player's skill can affect the award model that is initiated when the player takes an action to earn an award (e.g., successfully destroying a target). Upon each award model being initiated, a credit cost is deducted from the player's credit meter, and then award model is activated which can generate an award, or a value of zero which is a loss for the player.

Abstract: Among other things, systems and techniques are described for authenticating one or more client devices. A system includes one or more client devices and a server to communicate with the one or more client devices over a network. The server receives a request for network connection from at least one of the client devices. In response to the received request, the server performs authentication of the requesting client device based on at least two factors. The at least two factors includes a transmission control protocol (TCP) header verification to identify a media access control (MAC) address of the requesting client device as an authorized or unauthorized MAC address; and a challenge-reply verification performed based on the TCP header verification. The challenge-reply verification includes sending a challenge message sent to the requesting client device; receiving a reply message from the requesting client device; and identifying the received reply message as a correct or incorrect reply.

Abstract: In one aspect a switch can be placed on any existing video gaming machine. A player can be informed that they have the option to play other games on the video gaming machine. The switch can be either an icon on the video gaming machine's video or a physical switch. Once the player touches the icon or presses the physical switch as an indication of his or her interest to play other games a server can take control of the video display and its touch screen. Similarly, when the player is playing any of the additional games available on video gaming machine, there will be an icon or a switch button to offer the option to go back to the slot's original game.

Abstract: Among other things, systems and techniques are described for authenticating one or more client devices. A system includes one or more client devices and a server to communicate with the one or more client devices over a network. The server receives a request for network connection from at least one of the client devices. In response to the received request, the server performs authentication of the requesting client device based on at least two factors. The at least two factors includes a transmission control protocol (TCP) header verification to identify a media access control (MAC) address of the requesting client device as an authorized or unauthorized MAC address; and a challenge-reply verification performed based on the TCP header verification. The challenge-reply verification includes sending a challenge message sent to the requesting client device; receiving a reply message from the requesting client device; and identifying the received reply message as a correct or incorrect reply.