., check, electronic transfer from checking account).

Next I'd find out if they do any electronic deposits.  

@Mandy Liu I still believe you need to notify them, check here:https://www.ftc.gov/tips-advice/business-center/gu...In particular it says "you must give the applicant or tenant a notice of that fact – orally, in writing, or electronically." as there are certain requirements the notice must include.

I am looking for an electronic screening, application, contract and rent collection system. 

Tenant 2 still has a lot of belongings in their room, clothes, electronics etc. 

Second exception: electronic payments.

My tenants don't all have a way to use the electronic payments.

But yes, I will talk to them to encourage them to open a bank account and pay me electronically.

Finding them post eviction also difficult @Jeffery H:   Yes, I have a lease that was signed 'electronically', but NOTHING else - no social numbers, birth dates, employment, references - NOTHING. 

No need for running wiring for each individual unit, a visitor pushes the button for the person they are visiting, the unit dials the number that is programmed and the resident can hit a button to unlock the door (assuming there is already electronic locking hardware in place).