[kordless]

But buying a product for a singular use and complicating it by including a singular app I have to install will only result in wasting people's time. Not to mention the fact umbrellas are pretty much a commodity. I'd encourage exploring the the general idea of attaching custom trackers to specific objects. Build out an IFTTT type app that tracks things on a selective basis. Backpacks on work days, umbrellas on rainy days, camera when you are going to the game, etc. The tracker tags should be customized for each use. The umbrella one attaches with a punch through pin and lock plate, for example.

Also, your general use statement is all wrong. The biggest problem with umbrellas isn't losing them, it's them getting destroyed by a gust of wind or simple, unrepairable mechanical failures. A better use statement would be "Never get caught again without your umbrella/backpack/camera/etc."