Abstract: Disclosed herein are disposable devices for measuring sweat having low dead volumes and allowing a quick sensory response. Also disclosed herein are methods of making and using such devices.

Abstract: A beverage can with an ingredient chamber for storing functional ingredients separately from a base beverage until the beverage can is opened by a consumer. The ingredient chamber may be disposed on a can end of the beverage can. The ingredient chamber may be broken open to release functional ingredients automatically when the beverage can is opened by the consumer. In some embodiments, the ingredient chamber includes a membrane that forms a sealed cavity. In some embodiments, the ingredient chamber includes a deformed cavity of the can end.

Abstract: A mattress support includes a first section and a second section configured to be coupled to the first section. Each of the first section and the second section includes a base plate configured to be positioned on a box frame of a bed. A top plate is pivotable relative to the base plate. A bladder structure is positioned between the base plate and the top plate and inflatable to adjust a height of the top plate.

Abstract: A mattress support includes a first section and a second section configured to be coupled to the first section. Each of the first section and the second section includes a base plate configured to be positioned on a box frame of a bed. A top plate is pivotable relative to the base plate. A bladder structure is positioned between the base plate and the top plate and inflatable to adjust a height of the top plate.

Abstract: A mattress support includes a first section and a second section configured to be coupled to the first section. Each of the first section and the second section includes a base plate configured to be positioned on a box frame of a bed. A top plate is hingedly attached to the base plate. A bladder is positioned between the base plate and the top plate and inflatable to adjust a height of the top plate.

Abstract: The bitstream includes digital codes representing an information signal. At least one digital code is selected. The code occupies a part of the bitstream which is to contain at least one watermark code which represents a watermark perceptible in the information signal. The selected digital code(s) are removed from the said part of the bitstream. The watermark code(s) are put in the said part of the bitstream in place of the selected code(s). The number of bits of the selected code(s) removed from the said part of the bitstream is greater than or equal to the number of bits of the said watermark code(s) put in the said part. The removed selected code(s) are appended to an end of the bitstream and/or placed in watermark user data fields created in the bitstream.

Abstract: An encoding data processing apparatus is described which is operable to generate protected compression encoded data representative of protected media signals. The apparatus comprises a data analyser which is operable to receive compression encoded data representative of the media signals and to select low perceptibility data bits in the compression encoded data which when altered would have a relatively low perceivable effect on the media signals recovered from compression decoding the compression encoded data after the selected bits had been altered. The bits are selected in accordance with predetermined criteria. The apparatus also comprises an information validation engine which is operable to form a normalised version of the compression encoded data by setting the selected data bits in the compression encoded data to a predetermined value and to generate a secure hash value of the normalised version of the compression encoded data.

Abstract: A data encryption apparatus operable to apply encryption to input data having at least a format identifying portion and a payload portion comprises means for discriminating between the format identifying portion of the input data and the payload portion of the input data; and means for selectively applying encryption to the input data in dependence upon an output of the discriminating means so as to encrypt at least a part of the payload portion of the input data but not to encrypt the format identifying portion. A corresponding decryption apparatus is also provided.

Abstract: A recording system for applying access control processing to input data content and for recording access-controlled data content on a computer readable storage medium. The recording system includes an encryption apparatus for encrypting portions of the input data content and an access control memory device which securely stores information from which a private key of a public key/private key pair associated with a data content recording user or user group is derivable. The encryption apparatus and the access control memory device co-operate to provide access control data including content recorder access control data and default access control data. The default content access control data provides the same level of access to the input data content as the level of access available to the data content recording user/user group. A recorder is provided for recording the encrypted input data content and the content access control data on the computer readable storage medium.

Abstract: Access to a data storage arrangement is provided in dependence upon a public/private key pair, the public key being held by the data storage arrangement and the private key by a removable memory device. The public key is securely held in a user directory of authorized users on the data storage arrangement, and is associated with a local version number. Another copy of the user directory is securely held by the removable memory device and is associated with an external version number. When the removable memory device is connected to the data storage arrangement to enable authentication, these version numbers are compared and the older version of the user directory is replaced with the later version. In this fashion updates to the list of authorized users can be propagated among suitably adapted devices without the use of a network.