Key & lock advice on systems

[Blair F.]

Hello, I currently have one duplex that I manage. I have put in place a lot of systems to make managing this rental and future ones easy. However one of my biggest issues is keys. I had SmartKey locks installed in door knob and deadbolts of front and back door. However I am having a lot of trouble re-keying them. I thought I could switch between a set or two of keys and re-key every time. Does anyone have any suggestion on systems or products for making rental keys easier? I would consider key pad locks on future rentals that may be short-term rentals, however that seems a little extreme for my 100 year old one bedroom long term rental.