The low membership fee includes electronic copies of all the forms you need for your state.

Cash, money order, electronic payment.

Your tenant moved out on Jan 5th.Now, they thought they'd want to stay until Jan 12th, but ended up able to move in the 30 days that would have been required.It doesn't really matter if electronic notice is valid or not, the law still requires the tenant to provide a minimum of 30 days advance notice.

I also put a backup lockbox with keys at each property for the lockout issue, since I don't have electronic locks on every gate (preferable), like Al said.

You can do your application in person with pen/paper or there's a number of services that help you accept fully electronic applications these days too.

Cozy, Quicken, rentpost, appfolio etc.Buildium allows me to enforce rules without being the bad guy and lets me collect payments in the form of electronic check, debit card, credit card or good old fashion cash.

I was able to get a tenant to go from money orders to an electronic pay option.

I use Buildium, and almost all of my tenants pay electronically, and I can pay my owners electronically.  

Bank transfers are typically online where the tenant sends funds electronically to you if your bank offers the service.  

I'd be concerned about liability over damaged electronics from your original wiring comment.