Times have changed, technology advanced, so things are handled differently 25 years ago as compared to today.

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I just hate that most of the people I deal with for business are so behind on technology.

More importantly I looked at how technology could not only improve lifestyle but cashflow:(These are general numbers not associated to a specific product, please price your own product and charge +/- accordingly)30 Unit Apartment$150 deposit per 2 "smart keys" (returned if 2 undamaged keys are returned - kept if not returned)= $4,500 on deposit at capacity$75 replacement - This will bring in a few hundred a year minimum on this property(Make sure your replacement cost to the tenant is more than your key cost for the hassle of reprogramming and to be paid for your time and cashflow, consider it like a contractors markup for services)If I pay $200 a lock I am in for $6,000. however in year 1 I receive $5k+in deposits or replacement fees that could be realized.

This is changing, though, as technology improves.

Now with easier 'automating' technology you could setup a go button in IFTTT or apple automatons that when you give a certain command, it texts the appropriate party that you are out safely.  

If you're a buy and hold investor, it's pretty simple to work remotely with all the technology out there today. 

The key will be finding the company, in your desired market, that has the technology in order to support that style of REI. 

@Courtney James If I were in your shoes especially in a production based business like wholesaling I would probably get more value and more return for the efforts and money by investing in a system or technology of some kind. 

YES.......... but I think Investors and Landlords need to get with technology to solve these problems.If the tenant turns it off, it will show the Smoke Detector as offline.The only way that my apt can have a fire and I won't know about it is if the tenant throws it away.