A method comprises applying a first rule to a second action in an online environment to produce a result. The second action is caused (702) by a first user in response to a first action (700). The first action is one of a plurality of actions in the online environment to which the first user is exposed that precede the second action. The plurality of actions is caused by at least two users other than the first user. The method further comprises: identifying (706, 708) the first action from the plurality of actions; identifying (710) a second user from the at least two other users, based on the first action, wherein the second user caused the first action; determining (518) if an intervention action is to be taken against the second user.

A security electronic shoe for a casino configured to house a plurality of playing cards to be drawn one by one for a game, comprises: a housing portion configured to house a stacked plurality of playing cards; an opening portion configured to expose a leading playing card among the plurality of playing cards housed in the housing portion; a draw guide portion configured to guide draw of the leading playing card from the opening portion; and a weight configured to push a last playing card of the plurality of playing cards toward the opening portion, and a bottom portion of the housing portion slopes so as to descend toward the opening portion, the weight is configured to be movable on the bottom portion of the housing portion toward the opening portion in a state pushing the last playing card toward the opening portion, according to that the last playing card moves toward the opening portion, accompanying that the leading playing card is drawn in sequence, and the housing portion has a structure in which an upper surface and at least one side surface are opened, and the plurality of playing cards can be loaded into the housing portion through the opened portion.

A fraud detection system which detects fraud in a game of performing collection and redemption of chips in accordance with a win or lose result includes a camera which captures an image of chips contained in a chip tray of a dealer, an image analyzing apparatus which analyses the image captured by the camera to detect an amount of the chips contained in the chip tray, a card distribution device which determines a win or lose result of a game, and a control device which compares the win or lose result of the game and the amount of the chips contained in the chip tray before and after collection and redemption of the chips to detect fraud.

A detection system according to the present invention includes a control device detecting fraud performed in a game table by using a result of an image analysis performed by an image analyzing device, and substitute currency for gaming used for this detection system has a multi-layer structure in which a plurality of plastic layers having different colors are stacked, a coloring layer is included at least in the middle, and white layers or thin-color layers (may be layers having a color thinner than that of the coloring layer) are stacked on both sides of the coloring layer disposed in the middle. A multi-layer structure, in which a coloring layer is included, and white layers or thin-color layers (the layers may be layers of a color that is thinner than that of the coloring layer) are stacked on both sides of the coloring layer of this middle, is employed.

There is provided a shuffled playing card, wherein a suit and a rank are printed on one surface of a card base sheet, and a back pattern is printed on another surface, different sheet IDs for one card base sheet or each of a plurality of card base sheets are printed on the card base sheet, one deck or a plurality of decks are formed by individual cards cut by a cutting machine from the card base sheet, the one deck or the plurality of decks are shuffled by a shuffle machine to form a set of shuffled playing cards, different shuffled playing card IDs for each set are assigned to the shuffled playing card as ID codes, and the sheet ID of the playing card constituting the shuffled playing card and the shuffled playing card ID are associated with each other in a database.

Administrating a package of shuffled playing cards to prevent fraudulent card exchanges. The administrating system is configured to calculate places and a number of packages of shuffled playing cards at places of the backyard, the places of playing tables, places of carriers and the disposition place using information obtained by the loading step and unloading step and the administrating system calculates by every ID codes bases 1) places of packages registered by the registering step for registering to a data base of administrating system and a number of packages place by place from information obtained from the loading step and the unloading step. The administrating system is configured to recognize whether there is a lost package by comparing the information of all ID codes registered in registering steps with the ID codes at places of packages obtained at the calculating step from the loading step and the unloading step.

A fraud detection system which detects fraud in a game of performing collection and redemption of chips in accordance with a win or lose result includes a camera which captures an image of chips contained in a chip tray of a dealer, an image analyzing apparatus which analyses the image captured by the camera to detect an amount of the chips contained in the chip tray, a card distribution device which determines a win or lose result of a game, and a control device which compares the win or lose result of the game and the amount of the chips contained in the chip tray before and after collection and redemption of the chips to detect fraud.

A fraud detection system which detects fraud in a game of performing collection and redemption of chips in accordance with a win or lose result includes a camera which captures an image of chips contained in a chip tray of a dealer, an image analyzing apparatus which analyses the image captured by the camera to detect an amount of the chips contained in the chip tray, a card distribution device which determines a win or lose result of a game, and a control device which compares the win or lose result of the game and the amount of the chips contained in the chip tray before and after collection and redemption of the chips to detect fraud.

There is provided a shuffled playing card, wherein a suit and a rank are printed on one surface of a card base sheet, and a back pattern is printed on another surface, different sheet IDs for one card base sheet or each of a plurality of card base sheets are printed on the card base sheet, one deck or a plurality of decks are formed by individual cards cut by a cutting machine from the card base sheet, the one deck or the plurality of decks are shuffled by a shuffle machine to form a set of shuffled playing cards, different shuffled playing card IDs for each set are assigned to the shuffled playing card as ID codes, and the sheet ID of the playing card constituting the shuffled playing card and the shuffled playing card ID are associated with each other in a database.

Administrating a package of shuffled playing cards to prevent fraudulent card exchanges. The administrating system is configured to calculate places and a number of packages of shuffled playing cards at places of the backyard, the places of playing tables, places of carriers and the disposition place using information obtained by the loading step and unloading step and the administrating system calculates by every ID codes bases 1) places of packages registered by the registering step for registering to a data base of administrating system and a number of packages place by place from information obtained from the loading step and the unloading step. The administrating system is configured to recognize whether there is a lost package by comparing the information of all ID codes registered in registering steps with the ID codes at places of packages obtained at the calculating step from the loading step and the unloading step.