Abstract: A dog jump apparatus having stanchions that are magnetically attached to a base and/or jump cups that are magnetically attached to stanchions is described. In some embodiments, the dog jump apparatus includes a base, a first stanchion magnetically fixed to a first end of the base, the first stanchion having at least one jump cup magnetic attachment point, a second stanchion magnetically fixed to a second, opposite, end of the base, the first stanchion having at least one jump cup magnetic attachment point, a first jump cup that magnetically attaches to the at least one magnetic attachment point of the first stanchion, a second jump cup that magnetically attaches to the at least one magnetic attachment point of the second stanchion, and a jump bar supported by the first jump cup and the second jump cup.

Abstract: A computing device is operated in a manner which provides improved checking to determine whether or not an authentication certificate for a software application being loaded onto the device has been revoked. In the case of trusted certificate chains that contain no revocation information, the device checks using an AuthorityInfoAccess extension (AIA) as selected by the device. In the case of untrusted certificate chains, notably including self-signed certificates, the device is controlled so that it ignores any authentication revocation information provided with the software application and always uses information stored on the device.

Abstract: A computing device is provided with a key manager which provides a mechanism for distinguishing between authorised use and unauthorized use of a cryptographic key by identifying an owning application for each key, which is authorised by the key manager to freely use a particular key, and is also trusted to ask for explicit confirmation from the user when considered appropriate, such as when the key is used in a signing operation. To allow for sharing of keys between applications, the owning application may be enabled to designate a list of other applications which are also trusted to use the key.

Abstract: In a computing device, when a user requests to carry out an operation, the device determines the type of operation requested and the time period since the user was last authenticated. The operation is enabled only if the determined time period does not exceed a threshold for the requested operation.