Out in Fort Worth on Saturday Morning they are having free VIN Etching. Basically they print off a label of your VIN w/ the VIN cut out, then rub acid over the exposed part of the window. ---from the Ft. Worth website Auto Etching Is Available The Police Departmentâ€™s Auto Etching Program allows owners to have their vehicle identification number (VIN) etched on their vehicle windows as an auto theft deterrent. These dates are prepared in advance and may change because of unanticipated circumstances. The date and location for July is: July 12: 10 a.m. to 1 p.m. Tarrant Regional Auto Theft Task Force Headquarters 3530 Joyce St. (West Division) Fort Worth, TX For more information, call 817-877-8441.