Online bill pay to some major company is some sort of electronic, free transfer to my knowledge. 

Like do not allow this method or any other method of electronic payment.

This could potentially add monthly income, but also be a benefit and convenience for tenants.Investigating machines that accept electronic payment only as I am out of state and this would remove the need for onsite collection of coins.1.

You'll need to get it serviced somehow...Also, there are electronic apps to make payments. 

Yes, you will pay a small subscription to use TurnoverBnb, but they have tools for you to sync your cleaning schedule as reservations come it, to pay the cleaners electronically, to review them, to not pay them if they don't show up or do a poor job, etc.

You can compare the EIN (Electronic Identification Number) on your bill to the EIN on the meter.

I get an electronic message from the bank instantly.

Further, except when a statue or ordinance requires notice to be sent bya particular means, Tenant agrees that all Tenant and building notices may bedelivered by electronic communication (e-mail) to any e-mail address listed on page1 for Tenant.

Further into the details, as in your line 2Mortgage Electronic Registration System (MERS) is a privately owned database that the mortgage banking industry created to simply the registration and transfer of mortgages.

As for locks, I would consider the locks that allow you to change access codes electronically.