On Thu, Feb 21, 2013 at 11:47 AM, Joe Hourcle <[log in to unmask]
> wrote:

> The problem is that you'd have to have it dynamically generate the list of
> who to text based on who's currently on duty.

If an app/service is generating the messages, it can take a parameter that
allows people to check in/out for purposes of receiving messages. So if you
forgot to check out, a bookmark in your smartphone would allow you to turn
off future messages.

If it's an on/off toggle switch rather than having to specify whether
you're in or out, neither the librarian at the desk nor the staff receiving
the messages needs to do anything more onerous than click on an icon.

Total skills required to put the service together: ability to author a
simple web page that can interpret a few parameters and send email (i.e.
just use the SMS email gateway)