A system for changing a mode of operation of a computing device using a pen device, the system comprising: at least one processor of the pen device; at least one network interface of the pen device; at least one sensor of the pen device; and at least one memory of the pen device comprising computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the at least one processor to: obtain, via the at least one sensor, gesture input data; characterized in that the at least one memory and the computer program code is further configured to, with the at least one processor, cause the at least one processor to: compare the obtained gesture input data to at least one gesture pattern; based on the gesture input data matching the at least one gesture pattern, transition the pen device to an active state; upon the transition of the pen device to an active state, detect, via an electrostatic communication channel of the pen device, an uplink signal from the computing device; responsive to detection of the uplink signal, change a mode of operation of the pen device to enable faster acquisition by a digitizer of the computing device based on timing information detected in the uplink signal, wherein changing the mode of operation of the pen device includes increasing a strength of a downlink signal transmitted by the pen device; and send, via at least one of the network interface or a communication channel other than the electrostatic communication channel, a signal to change a mode of operation of the computing device, wherein the signal is a wakeup event signal requesting transition of the computing device from a low power state to an active state. at least one processor of the pen device; at least one network interface of the pen device; at least one sensor of the pen device; and at least one memory of the pen device comprising computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the at least one processor to: obtain, via the at least one sensor, gesture input data; characterized in that the at least one memory and the computer program code is further configured to, with the at least one processor, cause the at least one processor to: compare the obtained gesture input data to at least one gesture pattern; based on the gesture input data matching the at least one gesture pattern, transition the pen device to an active state; upon the transition of the pen device to an active state, detect, via an electrostatic communication channel of the pen device, an uplink signal from the computing device; responsive to detection of the uplink signal, change a mode of operation of the pen device to enable faster acquisition by a digitizer of the computing device based on timing information detected in the uplink signal, wherein changing the mode of operation of the pen device includes increasing a strength of a downlink signal transmitted by the pen device; and send, via at least one of the network interface or a communication channel other than the electrostatic communication channel, a signal to change a mode of operation of the computing device, wherein the signal is a wakeup event signal requesting transition of the computing device from a low power state to an active state. compare the obtained gesture input data to at least one gesture pattern; based on the gesture input data matching the at least one gesture pattern, transition the pen device to an active state; upon the transition of the pen device to an active state, detect, via an electrostatic communication channel of the pen device, an uplink signal from the computing device; responsive to detection of the uplink signal, change a mode of operation of the pen device to enable faster acquisition by a digitizer of the computing device based on timing information detected in the uplink signal, wherein changing the mode of operation of the pen device includes increasing a strength of a downlink signal transmitted by the pen device; and send, via at least one of the network interface or a communication channel other than the electrostatic communication channel, a signal to change a mode of operation of the computing device, wherein the signal is a wakeup event signal requesting transition of the computing device from a low power state to an active state.