Some of our tenants don't have computers or smart phones.

Just the nature of small town workers not all are professionalized:  bank account, newer smart phone, have cash to wait for a check to clear etc.A contractor suggested I use green dot prepaid card to pay him. 

I am about to give up my old Blackberry(RIP) What smartphone does most Investors use?

I personally use google calendar on my smart phone, which syncs up with my gmail account.  

Anyone else having trouble accessing their message inbox from the app on their smart phones?

Over time that is a huge savings or added expense.Free Department of Energy Comparison ChartPunch in your local rates for the numbers to be dead on.http://www.eia.gov/tools/faqs/heatcalc.xls*I have been using the Emerson Sensi Wifi Stat because it is only $120 and you can lock it so it can only be controlled by YOUR smartphone.

They don't use computers/smart phones so anything they they have to set up online themselves is out of question.

I would encourage them to take pictures cause all of us have smartphones now and show you the proof of dirt.

Does Tellus have PC access or only smart phone?

Using the map that @Joe Muchel to explain the BFE will be the number that is represented in this way.So in this example @Joe Muchel property is likely sitting at 280 ft BFE then I suggest you use this website (https://whatismyelevation.com/) and a smartphone.