The title says it all. Each of my van's doors can be easily unlocked if someone breaks a window glass with a stone and reaches in to raise the door's lock lever below that window.
How about I put one of these at the bottom of each door on the inside, but out of sight? These can be unlocked with the flick of my finger.
And this hasp would go at the bottom of the driver's door on the outside, allowing me to get in with a key.
With the above hasp on the driver's door, I could use this high-security padlock on the hasp, which has unpickable keys and is designed to prevent sawing, cutting, or hammer strokes.
But this is just what I could figure out myself. If you have a better idea, please let me know. I'm taking some time to find the best answer before I start.
How about I put one of these at the bottom of each door on the inside, but out of sight? These can be unlocked with the flick of my finger.
And this hasp would go at the bottom of the driver's door on the outside, allowing me to get in with a key.
With the above hasp on the driver's door, I could use this high-security padlock on the hasp, which has unpickable keys and is designed to prevent sawing, cutting, or hammer strokes.
But this is just what I could figure out myself. If you have a better idea, please let me know. I'm taking some time to find the best answer before I start.