A keyless padlock having a padlock body, a shackle, a locking mechanism located in the body and associated with the shackle to lock the shackle to the body in a locked condition and to release at least a part of the shackle in an unlocked condition, the locking mechanism including a signal receiver, at least one control assembly and at least one actuator, the locking mechanism being unlocked upon verification of a signal including an unlock code transmitted by a mobile computing device.