A system for unlocking a charging plug inserted in a charging socket of a vehicle, a sensor device, which, when the charging plug is inserted in the charging socket of the vehicle, is designed to detect a person's hand when gripping a handle of the charging plug; a control device designed to check whether the vehicle is unlocked and/or the person is authorized to enter the vehicle, when the hand is detected, and unlock the charging plug inserted into the charging socket, if at least one of the two conditions has been successfully checked. Furthermore, the invention relates to a method for unlocking a charging plug inserted in a charging socket of a vehicle.