Still looking for a door lock for long term rental

[Deacon H.]

I have a multi that is about 1 hour away from me that I self-manage. Tenants are on 1 year leases.

Things are pretty stable but i fear the nuisance call of  "I lost my keys". 

I have been searching for a better way to accommodate this situation and was hopeful to find some remotely controlled and programmable door lock. I would charge my tenants to change their combination should they give it out to someone and need to delete and set a new one. 

Issues with this:

All the remotely controlled locks I have seen require wifi so I would either need to pay for internet connection OR require my tenants to let my door lock onto their networks.  That doesn't seem like it would work. 

Things I've considered:

1. Get a non-wifi enabled door lock and just program 1 spare code just in case someone needs to be let in. The issue here is that I still need to drive there at some point to remove a code and add a new one. This buys me time but I still need to drive there. 

How does everyone else get around this? It seems like technology nowadays should be able to solve this one.