Abstract: A method and a corresponding device for generating true random numbers for use in encryption of a message for secure transmission of said message from a sending device to a receiver, or for authentication of a sent message. An optical image represented by optical data is obtained by an optical sensor and processed in order to improve the stochasticity of the optical data. The thus processed data is then used for generating random numbers which can be used as an encryption key, or for generating an encryption key, for subsequent use in an encryption algorithm for encrypting the message. The method is implemented in a digital pen (DP) to be used in an information management system.

Abstract: A payment product has a writing area (6c) which is intended for a user's signature. In the writing area there is a first position-coding pattern (5) which makes possible digital recording of the signature. The first position-coding pattern is a subset of a larger second position-coding pattern. The payment product is used in a payment system which is based on electronic payment information, which has been recorded by means of the position-coding pattern, being sent to a server unit, which utilizes the position-coding pattern to check that the payment information is valid.

Abstract: A system for information management consists of a product, for instance a notepad sheet, which has a writing surface (3) with a position code (5), which codes a plurality of positions on the surface, and a device, which is adapted to record the information which is being written on the writing surface by detecting the position code. Moreover, on the product there are a number of activation icons (7a-g). When such an activation icon is detected by the device, the device initiates a predetermined operation which utilizes the recorded information. Such an operation can, for instance, consist of sending the recorded information to an indicated address. A product, a device, a method and a computer program for information management are also shown.

Abstract: A method for secure transmission of information from a digital pen to a receiving device is provided. The method includes obtaining, in the digital pen, a message in the form of a plurality of position indications recorded from a position code on a substrate; sending at least one of the position indications to a database device; receiving from the database device an address of a receiving device which is associated with the at least one position indication and an encryption key relating to the receiving device, the encryption key being associated with the at least one position indication; encrypting the message using the encryption key received from the database device; and transmitting the encrypted message to the address of the receiving device.

Abstract: Method and system for information association based on an absolute position coding pattern comprising dots or markings which codes coordinates for a position on an imaginary surface. The imaginary surface comprises several regions which are divided in areas, each defined by said coordinates. Handwritten information is digitized by a handheld device which is moved over a surface provided with said pattern and acts like a pen to make notes on the surface. At the same time, the pattern is sensed and coordinates for the pen is calculated regularly. By passing the handheld device over the borderline between areas having different coordinates, a hyperline is generated having a discontinuity. Such a hyperline is easily recognized by the computer system and is used for connecting information at different areas, giving information some properties, like color, or performing an action on the information, such as encryption, or transferring the information to a recipient.

Abstract: An information processing system contains an arrangement for enabling printing on demand of position-coded bases. In the arrangement, a current graphical object is selected from a set of graphical objects prestored in the system, which each define graphic information and corresponds to a rule object which connects at least one processing measure to the graphic information. In the arrangement, the current graphical object is assigned position data from a position data bank. The assigned position data can then be applied, together with the graphic information, to a substrate for forming the position-coded base. The arrangement also provides allocation data in the system, which associates the assigned position data with the graphical object in such a manner that position data read from the base by means of a digital pen device can be processed in the system using the adequate rule object.

Abstract: A payment product has a writing area (6c) which is intended for a user's signature. In the writing area there is a first position-coding pattern (5) which makes possible digital recording of the signature. The first position-coding pattern is a subset of a larger second position-coding pattern. The payment product is used in a payment system which is based on electronic payment information, which has been recorded by means of the position-coding pattern, being sent to a server unit, which utilizes the position-coding pattern to check that the payment information is valid.

Abstract: A business card and a pen, which is adapted to detect a position-coding pattern on the business card and calculate a coordinate by means of the pattern. When activating a send box by means of the pen, a computer sends a .vcf file containing the card holder's particulars to a card recipient belonging to the pen holder. When using an optional pen, the .vcf file is sent to a recipient indicated on the keypad of a mobile phone or written on the business card in associated fields or marked in other manners. The pen communicates with a computer wirelessly, for instance via Bluetooth, mobile phone and the Internet. Additional information can be drawn on the back of the business card and be attached to the transmission, such as date and time for the next meeting, a small drawing or sketch etc.

Abstract: A payment product has a writing area (6c) which is intended for a user's signature. In the writing area there is a first position-coding pattern (5) which makes possible digital recording of the signature. The first position-coding pattern is a subset of a larger second position-coding pattern.

Abstract: A system for electronic commerce in a computer network (3) comprises a server unit (CH) which has a first interface with a plurality of first computers (SP), from which users are able to order services using hand-held computer units (1), and a second interface with a plurality of second computers (PP) which handle accounts that are associated with the users of the hand-held computer units. The server unit (CH) has access to a database (20) that for each user stores a user identifier, which indicates the identity of the user, and a computer network address associated with the user identity, the computer network address relating to one of the second computers (PP) that handles an account belonging to the user. The system also comprises a registration unit (RS) which is linked to the database (20) and which allows an association to be made in the database (20) between any computer network address and a given user identifier.

Abstract: A method, a device, a computer program product and a product package for issuing and redeeming gift certificates on an e-commerce site. The method comprises receiving an order for a gift certificate from a first user. The order comprises at least a credit amount and information for identifying a second user who is to be permitted to utilize the credit amount. The second user is provided with an information carrier which is provided with a position-coding pattern which codes coordinates for a plurality of points on an imaginary surface. The points represent at least one product offered by the e-commerce site. Coordinates for at least one point and information that identifies the second user are received from the second user, via a computer network. This information is used to identify the credit amount that the user is permitted to utilize. Thereafter, an amount corresponding to the price of the product corresponding to the received coordinates is deducted from the credit amount.

Abstract: In a method for a person to carry out an operation in a network-based system, for example a payment, concerning goods or services indicated on a product, the person gives an instruction to the system to the effect that the operation is to be carried out using person-specific information previously stored in the system, by reading off a position-coding pattern in an operation field on the product using a hand-held device.

Abstract: A business card and a pen, which is adapted to detect a position-coding pattern on the business card and calculate a coordinate by means of the pattern. When activating a send box by means of the pen, a computer sends a .vcf file containing the card holder's particulars to a card recipient belonging to the pen holder. When using an optional pen, the .vcf file is sent to a recipient indicated on the keypad of a mobile phone or written on the business card in associated fields or marked in other manners. The pen communicates with a computer wirelessly, for instance via Bluetooth, mobile phone and the Internet. Additional information can be drawn on the back of the business card and be attached to the transmission, such as date and time for the next meeting, a small drawing or sketch etc.

Abstract: Method and device for secure wireless transmission of information from a sender to a receiver. A sending device is arranged for obtaining a message, a sender identity and a receiver identity and includes encryption means for encrypting the message to be transmitted. A transmission channel is established from the sending device to a receiving device for transmitting the encrypted information to the receiving device. A secure note is used for defining the receiving device. In the receiving device, there is arranged decryption means for decrypting the information and display means for presenting the message to the receiver. Optionally, the receipt of the message is verified to the sender. Preferably, the message is encrypted in the sending device by a symmetric key and decrypted by the receiving device by the same key.

Abstract: A method and a corresponding device for generating true random numbers for use in encryption of a message for secure transmission of said message from a sending device to a receiver, or for authentication of a sent message. An optical image represented by optical data is obtained by an optical sensor and processed in order to improve the stochasticity of the optical data. The thus processed data is then used for generating random numbers which can be used as an encryption key, or for generating an encryption key, for subsequent use in an encryption algorithm for encrypting the message. The method is implemented in a digital pen (DP) to be used in an information management system.

Abstract: Method and system for information association based on an absolute position coding pattern comprising dots or markings which codes coordinates for a position on an imaginary surface. The imaginary surface comprises several regions which are divided in areas, each defined by said coordinates. Handwritten information is digitized by a handheld device which is moved over a surface provided with said pattern and acts like a pen to make notes on the surface. At the same time, the pattern is sensed and coordinates for the pen is calculated regularly. By passing the handheld device over the borderline between areas having different coordinates, a hyperline is generated having a discontinuity. Such a hyperline is easily recognized by the computer system and is used for connecting information at different areas, giving information some properties, like color, or performing an action on the information, such as encryption, or transferring the information to a recipient.