When we’re doing several other things at the same time as baking, it’s easy to forget to check the oven, and things get burned. When we’re watching a movie and the phone rings, it’s annoying to have to go to the phone to check the caller ID to see whether it’s worth interrupting for.
I want a household pager that vibrates and has a single-line alpha display. Range limited to my house, and integrated with everything.
Set the oven timer; when it goes off, the pager says “Oven timer.”
Incoming phone call, pager shows the caller ID. Doorbell could show “Doorbell,” in case we were upstairs where we can’t hear it.
Washing machine, dryer, or dishwasher finishes running, pager lets you know.
Integrated with everything in the house, I think it could be incredibly handy. Sensor modules could be serial-numbered, so you assign text to functions in the base station rather than at each sensor. Of course, the trick is integrating with everything in the house.