My 86 year old mom with her paper files and notes will run organizational circles around most people with all the electronic tools at their disposal. 

The property management company I work for refuses to accept any form of electronic payment.

You need to change to an electronic key pad.

I completed my journeyman certification in the Navy in electrical and electronics.

I can literally go months without any interaction other than statements and electronic deposits. 

I only have one tenant that wants to pay electronically.

It is used every electronic device we purchase.

Nothing worse than trying to keep up with a key on the beach as I specifically look for units that have electronic locks and also feel it is safer.  

Received electronic payment of rent for Property Y and recorded same into QuickBooks.

And, while you're doing so, tighten up your qualifying standards, require a security deposit and renter's insurance with landlord as additional insured, make payments due by electronic remittance only - get it set-up right from the start.The quality of the tenant is the quality of your return.