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Maybe it would also be interesting to have phones with e-ink displays on its sides, for things such as notifications, weather conditions and phone status.

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The form factor that makes the most sense for notifications is a watch. It's a lot easier to look at a watch than it is to dig out a cell phone.

A little watch that I could program with Lua to do pub/sub to my phone events would be great.

Not great conversation for a dinner party, but I'd buy one for $100.

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