You can use Schlage, Operto, NoiseAware, and Ring Camera for monitoring and security. :)

If you want your phone ringing with motivated sellers, use bandit signs.

If you have pipes coming out of the walls or floors or ceilings, they need to have the ring plate on it. 

Not worth it to me.In my area if the pool has a powered safety cover that can hold body weight, then a barrier fence is not required.

The price of doing this is miniscule relative to the the leverage you're applying to the deal, so consider it a more than fair barrier of entry. 

Low barrier of entry, landlord friendly and you can find deals that cashflowI agree with @Patrick Drury about Columbus.

For expansion, innovation, or simply covering cash flow during slow periods, access to capital is often a barrier.

The recipient however is free to reply back using their native text messaging system.The question I have for you: How will you remove the technological barrier for all parties to text natively and still track back to a central system, while ensuring only landlord to tenant messages are logged?

Give him a ring, name is Ryan.+1 (727) 729-2647 

Landlord-friendly state, low barrier of entry in terms of price, and solid cash flow.