An electronic frame for an optical device, including: a frame surface element configured to house, at least in part, at least one lens, and connected to at least one temple by respective ends; a circuit controlling operation of at least one electronic component; at least one magnetic or electric field transmitter and one magnetic or electric field sensor, at least one of the sensor or transmitter mounted to be movable relative to one another between first and second positions, the sensor configured to detect a first field direction and a first field value emitted by the transmitter in the first position, and a second field direction and a second field value emitted by the transmitter in the second position, to generate a first position signal or a second position signal towards the control circuit to prompt a response from the control circuit towards the at least one electronic component.