I live on 10 acres with two out buildings.  I have these type locks on all my buildings and my house.  When you are out working on projects or mowing, one never has their keys with them.  These solve the problem of having to walk all the way around to where you exited the house.  I would give 5 stars, but this is the third lock replacement I have had to do.  They seem to only last about 5 years before they quit working.