Sure! The battery levels are sent to our servers from your phone, and when the battery level reaches 40% or lower, you will receive a notification to change your batteries (assuming you have notifications enabled). In addition, there will be an in-app full-screen popup prompting the user to change the batteries. It will keep appearing every time you use the app until the batteries are changed and the server recognizes the battery percentage to be over 40%.
Since we've implemented the new notification system, there has been a significant decrease in the number of Sesame users who were caught unaware by Sesame running out of batteries. There were only 2 exceptions where the voltage drop was too fast for the notification to trigger, and that's definitely something we're looking at eliminating completely.
Yes, we have a lot of new products in the pipeline! We know people only want to hear about the Wi-Fi Access Point right now since it's been long overdue, so we're being low-key with the other products we're developing. But we'd definitely be happy to tell you more via PM if you're interested in knowing what we're working on! - CANDY HOUSE