A method to detect objects striking the windshield or other glass in a vehicle and report this at the conclusion of a vehicle rental transaction. A microphone or other device capable of detecting the sound of objects striking the windshield or glass of a vehicle is used to convert the sound into an electrical signal which is further processed and results of a suspected glass strikes are stored. This stored result is communicated to the rental agency following the completion of the rental period so that a thorough inspection for damage can be made and such damage can be assigned to the responsible party.