iPhone dock connector
The iPhone dock connector is awesome. There are plenty of devices for it. Its what I would consider ubiquitous today.
I visit many hotels and one of the things that I totally enjoy is the fact that I can dock my iPhone and it automatically charges it. Sometimes I play music. Sometimes I’ve seen it at the back of the telephone, and the whole idea is to provide charging only. It means I carry one charger less.
The charger itself has changed over time. When I first interfaced with it, it connected to my computer using Firewire (from the days of the first generation iPod). Then it moved to USB. To the device, they had little push-in buttons. Now its just push in or pull out.
Throughout all this though, the form factor has remained the same. Which is why there are so many devices for charging, playing music, interfacing to blood pressure monitors, and lots more. The device ecosystem is huge.
Changing it now without compatibility is going to be a real bummer. Lets hope Apple is smart about this. Optimize it, maybe. But make sure it “just works”.