Have We Reached Peak Lightbulb?

Buying smart bulbs for the home is a little like choosing between HD-DVD or Blu-ray. Like regular old incandescents, or CFL or LED or halogen bulbs, smart bulbs—which can be controlled from your phone—fit into your regular old sockets. But unless you want to have a separate phone app for each room of your home, you'll need to choose a system and stick with it, hoping that the system stays around so you can buy replacements or additions in future. You also have to hope that the app you use to switch your lights on and off is updated to work on any new phone you might buy.