Abstract: The invention relates to mutant forms of lysenin. The invention also relates to analyte characterisation using the mutant forms of lysenin.

Abstract: A tracking system includes an emitter array configured to emit radiation around a subject to be tracked in at least one dimension wherein each emitter or group of emitters is modulated to permit identification of a source of the radiation. A receiver is configured to receive the radiation from the emitter array, wherein one of the emitter array and the receiver are located on the subject to be tracked. A processor is configured to interpret changes in radiation and correlate the changes to a device position to output a device position control signal.

Abstract: A tracking system includes an emitter array configured to emit radiation around a subject to be tracked in at least one dimension wherein each emitter or group of emitters is modulated to permit identification of a source of the radiation. A receiver is configured to receive the radiation from the emitter array, wherein one of the emitter array and the receiver are located on the subject to be tracked. A processor is configured to interpret changes in radiation and correlate the changes to a device position to output a device position control signal.

Abstract: A secure storage system and method comprises setting up a storage area for storing encrypted files in a store accessible via the Internet and generating user specific user interface code requiring the entry of a user password during execution on a user's computer for access to the encrypted files in the store over the Internet. The generated user specific user interface code is stored at a site accessible via the Internet for download by a user. A user can thus use a computer to download the user specific user interface code and enter their password in order to be able to access the encrypted files. Preferably, the files are encrypted using a password which is the same as the user password required to be entered to activate the user interface. Thus in this way the user interface is able to decrypt the files in a simple manner which can be automated.

Abstract: A secure processing system provides for the encryption of files by compression of the content of files and encryption of the compressed content. Also, files can be obfuscated by changing their file name and location and keeping a record of the changes encrypted for them. The encryption and stealth features can be made accessible by a simple graphical user interface accessible by a password to provide for simple operation.

Abstract: A method and system for placing a purchase order with a product trader for a product over a communication network comprises accessing an information site on a shopping server using a shopping client and downloading program code for executing a shopping cart to the shopping client from the shopping server. The programme code when executed on the shopping client generates a purchase order interface for the user enabling a user to input product selection data and payment data. Order data is generated using the received selection data and payment data and at least the payment data is encrypted. The order data is then transmitted from the shopping client over the communications network to a location for reception by the product trader.