More than half of your guest are going to search for travel on their mobile device.

For example:Keep electronic copies of whatever you can, have your tenants pay rent online, minimize clutter and keep in your home only what you need.

I'll invite someone I just met electronically from my business school who posted in an alumni group: "I've used the same broker a handful of times now for buy-to-let & residential purchases and remortgages.

Most properties have electronic lockboxes that you can't access.

., set it up with a key box, electronic lock, or convince @Joshua Dorkin  to handle keys for you.

I guess I could use some sort of electronic lock.

Refinancing is an option (typically up to 75% LTV), but unless you have an immediate need for the funds, an LoC is a better device as you only pay interest when you draw down.

Everything on the site, including the podcasts, can already be accessed from your mobile device.

I was under NDA and an officer of the company for the private family when I was working for as COO at Arrowhead Products as well Crane electronics so I can't discuss... 

I currently work for a medical device company and I would love nothing more than to be able to quit my job and work full-time as a REI.