Our suspicion is that 1 guest is signing in, and then somehow "sharing" the wifi via their Iphone to other guests, allowing them to circumvent the email entry process to gain access to wifi. 

The iPhone app is quite good.

But over time google voice has been buggy with iPhone and the number dies if not used.

Or a national firm with local resources.A good exercise for you to perform is go grab a piece of paper (or open up an iphone note). 

**typed on an iPhone

It's more important to learn about balancing the lighting and framing your shots.Here's a video of someone shooting an AirBnB with an iPhone 13.

iScanner is also worth a try on the Iphone.

Pre printout you can make notes on the back of the receipts to jog your memory.Iphone can pair with an iphone printer and print wirelessly.Then your CPA can digitize your records if that is how you both want it.I like it because I can go back and get a feel of the total expenditure as well as the detail, and compare that to the benefit--like it's own little file cabinet drawer.Good Luck!

before you do this, read these two threads:http://www.biggerpockets.com/forums/52/topics/66798-rental-upgradeshttp://www.biggerpockets.com/forums/52/topics/69512-ways-to-increase-revenue-from-rentalsThese days, tenants can only afford what they can afford - they have enough little luxuries that cost them (IPhone, IPad, unlimited data and text plans, etc) each month.

On the mobile app (iPhone at least), you can click on Forum icon at the bottom, then swipe the top nav bar to the right to My Discussions.On my mobile app I am getting an empty screen, so there may be a bug there!