Including a sticky back on the new motion sensors, just like the contact sensors was a great move by Wyze. However, just like any peel & stick application, moving them more than a few times renders the sticky foam unusable.
I’ve been using this reusable sticky tape material and it works awesome!
http://bit.ly/2JXgiH6 (This is a Scotch brand version that comes in tabs, but you can also just search on for “reusable tape” or “washable tape” which comes in rolls of various widths. )
It’s about 2mm thick, a bit like the foam that comes on the sensors. It’s clear, removable, washable/reusable, and very sticky. It feels a lot like those pads you can buy for your dashboard to set your phone on.
I bet it would work great on the magnet coins that come with Wyze Cams. I’ll give it a shot and see.
Pro Tip: Once you lose your sticky and move to this solution, peel off all of the original foam first so you get a good grip.