I actually talked to Canary. They said that the video would eat up a lot of bandwidth and advised me NOT to tie the Canary to a hotspot. I find this weird since they claim they are building a cell data base for the Canary Flex.
With that in mind, and having been an iPhone developer in my pre-Retirement days, I wrote an app that links to the Elgato Eve Motion Sensor. If it detects motion, it will send me a text message. Unfortunately that means that I have to leave either my cellphone or iPad in the rig to use it. I can't sell the app because it violates some of Apple's HomeKit guidelines. But if you are anywhere near San Jose CA, I can put it on your iPhone or iPad to beta test :-)
Added: HWH Kick-Down Leveler; RoadMaster Anti-sway bars; Tornado Rotary Tank Rinser; Accede Backup Sensor Kit; cylinder locks (w/one combo lock); custom sink cover; Kenwood DDX 5706S front radio; Pioneer MVH-X5560BT rear radio; Oxygenics Shower head; ScanGuage II; Blue Ox Tow Bar w/RVi Brake 2; Winegard Rayzar Automatic TV antenna; Trimark Steel door lock; Dometic 310 toilet; whatever is next.