A bicycle locking device comprising: a housing (12a, 12b) configured to couple to a bicycle frame, wherein a section of the housing (12a, 12b) forms a housing arc having a gap, and wherein the gap in the housing arc is wider than a bicycle tire width, wherein the housing (12a, 12b) is comprised of a front casting and a rear casting, wherein the front casting and the rear casting are coupled together by a securing means; a locking ring configured substantially within the housing arc, wherein the housing (12a, 12b) and the locking ring are configured to move between a first position where the locking ring substantially transects the gap to a second position where the gap is substantially open; an electronic actuator component configured to act on the locking ring to move the locking ring from the first position to the second position, and wherein the electronic actuator component is configured to receive an indication to move the locking ring to the first position or to the second position; wherein the bicycle locking device comprises a lock electronics module which includes an electronic communications component, a power supply, an accelerometer component, a GPS receiver, and a sound-emitting device; wherein the lock electronics module is configured to monitor indications of tampering with the bicycle, whereby such indications are movement of the bicycle, changes in location as determined by GPS electronics, vibration, or a combination of these indications; wherein the communication electronics component is configured to wirelessly send to a second device an alert indication; wherein the communication electronics component is coupled to the electronic actuator component, wherein the communication electronics component is configured to generate an indication to the electronic actuator component to move the locking ring into a first position or second position, wherein the communication electronics component is configured to wirelessly receive from the second device a lock or unlock message; wherein the accelerometer electronics component is configured to detect motion of the bicycling locking device when the locking ring is in the first position and wherein the accelerometer electronics component is configured to activate the sound generating electronics component to output sound when motion or other indications of tampering are detected; and a mounting bracket that is configured to be coupled to the bicycle and is configured to latch the lock housing (12a, 12b) to the bracket by an approximate ninety degree turn that cannot be performed when the locking device is locked to a bicycle wheel. a housing (12a, 12b) configured to couple to a bicycle frame, wherein a section of the housing (12a, 12b) forms a housing arc having a gap, and wherein the gap in the housing arc is wider than a bicycle tire width, wherein the housing (12a, 12b) is comprised of a front casting and a rear casting, wherein the front casting and the rear casting are coupled together by a securing means; a locking ring configured substantially within the housing arc, wherein the housing (12a, 12b) and the locking ring are configured to move between a first position where the locking ring substantially transects the gap to a second position where the gap is substantially open; an electronic actuator component configured to act on the locking ring to move the locking ring from the first position to the second position, and wherein the electronic actuator component is configured to receive an indication to move the locking ring to the first position or to the second position; wherein the bicycle locking device comprises a lock electronics module which includes an electronic communications component, a power supply, an accelerometer component, a GPS receiver, and a sound-emitting device; wherein the lock electronics module is configured to monitor indications of tampering with the bicycle, whereby such indications are movement of the bicycle, changes in location as determined by GPS electronics, vibration, or a combination of these indications; wherein the communication electronics component is configured to wirelessly send to a second device an alert indication; wherein the communication electronics component is coupled to the electronic actuator component, wherein the communication electronics component is configured to generate an indication to the electronic actuator component to move the locking ring into a first position or second position, wherein the communication electronics component is configured to wirelessly receive from the second device a lock or unlock message; wherein the accelerometer electronics component is configured to detect motion of the bicycling locking device when the locking ring is in the first position and wherein the accelerometer electronics component is configured to activate the sound generating electronics component to output sound when motion or other indications of tampering are detected; and a mounting bracket that is configured to be coupled to the bicycle and is configured to latch the lock housing (12a, 12b) to the bracket by an approximate ninety degree turn that cannot be performed when the locking device is locked to a bicycle wheel.