Given the choice I would thread live SWA cable through the frames .
Unfortunalty the mofo's with bolt croppers might get electrocuted and this simply isnt acceptable in the eyes of the law .
My std garage door is on a chunky wood frame . 6" square posts on the uprights .
Would it be possible to chisel out 2 rectangles and fit mortice /Chubb deadlocks into the lower left and right pillars . They would need to be set back about 4 or 5 " . Some reinforcement would be neccessary behind , maybe a steel bar .
I could then rivet or weld the 2 striker plates into the sides of the garage door , and open a slot in the door itself.
To unlock the garage one would simply unlock the 2 mortice locks and then the single middle one.
From the outside all would see is a small 1cm x 3cm hole in the lower corners of the uprights , which could easily be covered or disguised.
I am pretty certain chiselling the hole for the lock and fitting it is straightforward enough . As is mounting a strengthening plate on the side of the door , and the back of the posts .
Question is is there a MorticLock / Chubb lock with a very long 4 -5 " key ?
Looked on Ebay and Google and couldnt see anything suitable .
Should be very quick to open , and better than the existing lock, which i have modded so sliding something thin up the top of door wont pop it open.
Lucky to have retired neighbours with gay dogs. PIR's and very crunchy gravel drive , but dont want to push my luck