I bought her washer/dryer too when she got married and moved away.I am not going to make an appointment with a realtor and wait around for them to unlock a house when I can do it myself. 

@Brooklyn McCarty self management also can unlock some lucrative tax strategies as well!

If anyone needs access, I just add their phone # (they receive a link to download app) and they can unlock the door. 

Additionally, if you delay some gratification and use the excess to grow the portfolio, then there is even more cash flow to unlock after each acquisition. 

You need to make sure you get the one without the deadbolt option so they can't leave it unlocked. 

Has a PIN; I don't really want to have a lock that can only be unlocked by having a smart phone.3.

Give 1-2 guest parties the option of renting a single room and keeping the other guest area locked via smart locks, then unlock the other bedroom with 3 guests for more and charge more for it.

I wanted to be able to come by, unlock boxes, collect checks and leave a receipt in the mailbox or taped to door/taped to drop box.

I'm able to lock/unlock remotely and change the passcode as needed.

They had left it unlocked, vacant, with the keys inside since they took possession 5-6 months prior.