Abstract: Techniques and mechanisms for exchanging information between a mobile device and another device which is to serve as an accessory to the mobile device. In an embodiment, the accessory device and the mobile device are coupled to one another via an audio connector of the mobile device. The mobile device receives via the audio connector encoded signals which represent, in a first frequency range, information generated by a sensor of the accessory device. The first frequency range is within an audible frequency range and outside of a telephony frequency range of the mobile device. In another embodiment, the encoded signals are provided to telephony logic of the host device during a telecommunication exchange between the host device and a remote device. Due to its representation in the first frequency range, some sensor information is prevented from being represented as an audio signal in the telecommunication exchange.

Abstract: Techniques and mechanisms for exchanging information between a mobile device and another device which is to serve as an accessory to the mobile device. In an embodiment, the accessory device and the mobile device are coupled to one another via an audio connector of the mobile device. The mobile device receives via the audio connector encoded signals which represent, in a first frequency range, information generated by a sensor of the accessory device. The first frequency range is within an audible frequency range and outside of a telephony frequency range of the mobile device. In another embodiment, the encoded signals are provided to telephony logic of the host device during a telecommunication exchange between the host device and a remote device. Due to its representation in the first frequency range, some sensor information is prevented from being represented as an audio signal in the telecommunication exchange.

Abstract: This application relates to a method of enabling and disabling software features in a software-implemented feature set, to the software itself and to a device with the software thereon. In accordance with the method of the invention, a token formed from identification and feature related information is sent to an authorization device. The authorization device creates a key from this information and sends the key and information on the authorized feature set back to the device. The device generates its own version of the key and compares its version with the received version. If the two keys match, the authorized feature set is implemented.