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Comment on How I Built an Apartment Buzzer for Multiple Roommates

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I love Twilio, let me count the ways. Doing flow control of an online or offline process from a phone is awesomely powerful. (Particularly cell phones.)

Here's a related example which I'm busy coding today: I wanted people to be able to record custom appointment reminders, but (following many years of supporting non-technical users) think microphones and MP3 encoding are probably beyond their ken. So instead, when you click "Send Mary Smith a custom reminder" on the site, it pops up a lightbox saying "Call 555-123-1234 and type in the code 1234", and when you do so the phone will say "Leave your custom message for Mary Smith's appointment on June 16th from 5:00 PM to 5:30 PM after the beep." Then, after doing so, your lightbox automatically closes and you get visual indication of success.

Bonus points: registering new numbers in Twilio is so cheap that I can trivially afford to give every customer their own call-in number, and tell them to put it on speed dial. Then I can use the same basic pattern for any number of tasks.

You've still got the user interface backwards — you shouldn't have to present a dialog with a phone number for the user to dial, your app should simply call the user when they click a button.

Amazon does this as a confirmation step when you sign up for AWS, and most of the interactions in Google Voice are based on this model.

Awesome idea. Do you have a link to this? Would be cool to see it.

http://www.appointmentreminder.org for the service. Should launch publicly in July. I will disavow all knowledge of comments about forthcoming features should priorities change during development ;)

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