I decided to install wi-fi cameras in the property to monitor and to give access to future tenants for peace of mind.

I'm specifically interested in a lock system that will allow me multiple entry codes and allow me to remotely monitor who and how often people are entering the home. 

If you have and are sure you are still underwater, continue to monitor and pay down debt so when the day comes that you can get out from under it, you are ready to take advantage of the opportunity.

@Olen Main You are actually in a good to position to monitor an opportunity. 

It allows me to lay out a plan to execute,  and then gives me the info I need to monitor progress...but that's just me.  

Available online and can tie into your phone for monitoring.  

If the data is dodgy, or the sift and sort is not up to snuff, you get very bad results very quickly.Data for ongoing obligations is reported reasonably well as it is all programmed into the monitoring software.

TED spreads are not the "be all, end all" in Real Estate investing, however, it's another variable that we as investors would do well to monitor in the background for any unforeseen movements. 

An old lady was worried that the dog was abandoned, so helped monitor if anyone came in to feed the dog.

Do you charge for monitoring and maintaining vacant units?