You must bring one of the following forms of government-issued, photo identification to title a vehicle in Texas. Acknowledgement: I authorize the following agents to purchase permits on my behalf, including under my license and use of my escrow account.A letter can be submitted requesting that certain personnel be removed from the current authorization form. A copy of the registered owner's valid U.S. State issued Driver License or Personal Identification Card or Federal Identification is required. Type up a simple statement like "To whom it may concern, please leave all deliveries at this door. " Underneath the statement print your name and then sign it. (Balfour Beatty Communities). All uninsured Travis County residents are encouraged to apply, regardless of their U.S. residency status. Travis login --pro travis token --pro. If you mean a letter to authorize the delivery person to leave package at your home, it is quite simple.