Depends on how much interaction you have needed with the tenant.

Can’t wait to interact with you guys and see what the future holds. ready to work with and assist other agents and investors.

They get trained on proper rent payments or I get rid of them early on and get someone that will pay the rent on time.I am not going to chase rent I want it to automatically show up in my account every month with little to no interaction from me.

A little to the party with nothing new to add but would vote on exactly what @Michael Wagner says - smart phones and Easy Storage Solutions.Kiosks definitely filled a void but have since been eclipsed by the smart phone.All things being equal there's a few advantages to a kiosk, but as they're not equal (specifically the expense) and you're going to need a website anyhow, you ought to just make it all-encompassing & interactive (rent, pay, check availability, etc.) from a smart phone. 

Bigger Pockets provides a wealth of information to investors and it is a wonderful place to learn and interact with fellow investors of all experience levels and in many different investment areas.  

@J Scott  is one of the most knowledgeable individuals I have interacted with a learned a ton from him (thanks J!)

All you can do is stick to your word, and be a decent human being to them when you interact. 

I would apologize for being harsh and I feel I must disclose that I have never interacted with the company.

@Jon R GimbleThat does not work, unless the LLC the IRA is lending to has nothing whatsoever to do with the IRA account holder.Your IRA cannot transact with, lend to, or otherwise interact with you, lineal family, or an entity like a business or trust where you or lineal family have control.

Other common methods are as one you discussed is MLS listings, direct mailing, bandit signs, driving for dollars, and sometimes you have a deal that gets crossed by you by other people you know.Good idea for you is too start interacting more and making personable connections with all people in the real estate niche.