The SPOT is a portable GPS that, for $100/year, lets you send your location along with either an OK or a help message to any cell phone or email. You can also send a 911 message that SPOT will relay to local authorities. For an additional $50/year you can have your location sent automatically every 10 minutes to a web page that you can password protect if you like. The SPOT has no display on it, it is only useful in conjunction with the service.
This info is not very well publicized. Milton Academy makes their ice rink available to Milton residents for free
MILTON ACADEMY PUBLIC SKATING SCHEDULE FOR MILTON RESIDENTS
Winter 2009
Town Skate SUN 11/9/2008 2:30 PM 3:50 PM
Town Skate SUN 11/16/2008 2:30 PM 3:50 PM
Town Skate WED 11/26/2008 12:00 PM 1:50 PM
Town Skate SUN 11/30/2008 3:00 PM 4:20 PM
Town Skate SUN 12/7/2008 2:30 PM 3:50 PM
Town Skate MON 12/22/2008 3:30 PM 4:50 PM
Town Skate TUE 12/23/2008 3:30 PM 4:50 PM
Town Skate SUN 12/28/2008 2:30 PM 3:50 PM
Town Skate TUE 12/30/2008 11:30 AM 12:50 PM
Looking at the screen grab on the right, it looks like they change the destination airport to the origin airport.These chips are amazingly cheap, $8.61 qty-100 from DigiKey.
The ST part I am testing:
http://www.st.com/stonline/products/literature/ds/12094/lis3lv02dl.pdf
draws .6mA at 2.5 V and can be set to generate a pulse when a certain acceleration is crossed