Abstract: An electronic device for providing or affecting a smell. The electronic device includes a device body, which has a chamber for containing one or more chemical substances and an interface through which the one or more chemical substances in the chamber can be released from the device body to provide or affect a smell perceivable by a user. The electronic device also includes a release control mechanism arranged at least partly in the device body and operable to control release of the one or more chemical substances from the device body through the interface.

Abstract: A human-machine interaction device including a flexible substrate for mounting to a user, a sensing module arranged to sense deformation of the flexible substrate when the flexible substrate is mounted to the user and in response generate a sensed signal, a controller operably connected with the sensing module and arranged to process the sensed signal to obtain a processed signal, and a communication module arranged to communicate the sensed signal or the processed signal to an external electrical device for controlling operation of the external electrical device.