The invention relates to a remotely readable electronic device (10), particularly an implantable device, with an O associated reader (20). The device comprises a resonance circuit (12) that can selectively be set into one of at least three different resonance states, wherein this state can wirelessly be sensed by the remote reader. In a particular embodiment, the resonance circuit (12) comprises two capacitors (C1, C2) that can selectively be connected or disconnected to the resonance circuit (12). The reader (20) preferably scans a given frequency range to detect spectral absorption patterns that correspond to certain resonance states of the resonance circuit (12).