Abstract: The invention relates devices and methods for creating a cryptographically assured timestamp that can be verified by a party that was not present during the creation of the timestamp. The timestamp is applied to physical documents, and other substrates capable of receiving an optically detectable mark, that are to be transmitted to temporally or spatially distant recipients.

Abstract: An electronic gaming system is disclosed that allows a player to play a game of knowledge, such as a trivia game, while playing a slot machine. The player can preferably use successful trivia game results to access higher reward levels with the slot machine, with each reward level having progressively higher payouts for a given winning combination or a higher probability of a winning result or both. The trivia questions are preferably stored in a question database after being obtained from a remote source, in order to ensure an adequate supply of accurate and sufficiently challenging trivia questions.

Abstract: Slot machines for enabling team play by a plurality of slot machine players are disclosed. The game results of each team player are combined in a predefined manner to obtain a team game result. The game results of each player may be combined on a "per-spin" basis, or collected for each team player over an entire play session, with the net result of each team player combined on a "per-session" basis. In a "per-spin" embodiment, each team player initiates play, and the individual game results of each team player are combined in a predefined manner to obtain the best team game result, with the highest resulting payout, for each spin. In a "per-session" embodiment each team player continues play for an entire play session, and the net result of each team player is analyzed in a predefined manner on a "per-session" basis to obtain the team session result.

Abstract: A store controller stores a series of prices for a product and respective effective periods during which the prices are effective. A customer submits an offer to buy the product at an "offer price" that is one of the series of prices. The offer also has an offer period that elapses when the respective effective period of the product price elapses. The offer period thereby defines a period during which the offer is effective and after which the offer cannot be accepted. Each offer further specifies (i) a customer identifier for identifying the customer, and (ii) funds or a payment identifier for specifying an account from which funds (typically the offer price) may be collected if the offer is accepted. The store controller then determines whether to accept the offer. If the offer is accepted, the store controller (i) initiates use of the payment identifier, if any, to collect the funds, and (ii) uses the customer identifier to identify the customer as having paid for the product.

Abstract: A system and method for providing a gambling loss insurance policy automatically computes insurance premiums and processes gambling sessions covered by the gambling loss insurance policies. The players may purchase the insurance policies using various means such as coins, earned winnings, or credit cards. The gambling loss insurance system provides a high level of flexibility for the players to define specific parameters of the insurance policy. Additionally, the players may purchase the insurance policies directly from the gaming machine, a custom terminal on casino floor, or cage personnel having access to a centralized network server.

Abstract: In accordance with the present invention, a controller such as an online service provider computer or an ISP computer receives a survey including survey questions from a client desiring to have a survey conducted. The controller creates respondent questions based on the survey questions. The controller also selects one or more respondents from a list of possible respondents, such as a list of customer accounts. The respondent questions are transmitted to the selected respondents. Responses corresponding to the respondent questions are received. The controller applies an inconsistency test to the responses to generate an inconsistency test result. The inconsistency test determines if the responses originate from computers or humans not paying attention to the questions. Based on the inconsistency test result, a fraud signal may be generated.