Patent ID: 8365990

Claim:
An arrangement for registering off-line response cards, each of the off-line cards comprising a card ID identifying said off-line card wherein, the arrangement is adapted to a) a reader configured to read a card ID of a first off-line response card, b) a virtual ID generator configured to obtain a virtual user ID associated with said card ID of the first off-line response card, c) said reader also configured to read a subsequent card ID identifying another off-line response card, where said subsequent off-line response card is different from said first off-line response card, and c1) ask whether the off-line response card is a first card or subsequent card, and if said card is a subsequent card the arrangement is adapted to read a card ID of said subsequent off-line response card, read the card ID of said first or any other earlier card and thereby obtain a virtual user ID associated with said first or any other earlier card ID, and d) said virtual ID generator also configured to associate said subsequent card ID of the subsequent off-line response card with said virtual user ID.