vehicle with the remote control approaches and is about to hit the barrier a warning alarm is sounded or in another embodiment of this invention the remote sensor in the device is automatically lowered when it senses the approaching vehicle in another embodiment of this invention the collapsible barrier is secured onto a ceiling above a parking surface enabling a convenient electric source for the devices and easier maintenance and central control over numerous barriers placed in a large parking facility application_number US 84829801 A description the present invention is of an anti theft device specifically the present invention is of a collapsible barrier that can be used to prevent a car from being stolen the present invention is further of a device which can be used to guard a parking place for a vehicle when the car is not in the parking place the principles and operation of an anti theft device and parking space saver according to the present invention may be better understood with reference to the drawings and accompanying descriptions before explaining at least one embodiment of the invention in detail it is to be understood that the invention is not limited in its application to the details of construction and the arrangement of the components set forth in the following description or illustrated in the drawings the invention is capable of other embodiments or of being practiced or carried out in various ways also it is to be understood that the phraseology and terminology employed herein is for the purpose of description and should not be regarded.