I solved the key problem

The problem was that my bus pass kept falling out of the key case.Luckily it usually happened on the doorstep/The postman finds it and puts it through the letterbox.
But after much thought I reexamined the key case and found there is another pocket with a zip on it.So if I use that I hope it will be safer.I think some of is don#t remember to fasten these zips.
I think in my case the bus driver would let me on anyway as  they see I am hobbling along