1. Josh Marchi, Jeff King, Paul Rosenberger, Dan Chambers – Patent Liability Analysis–

2. “Reverse Geocache” Box Locked box that will only open after one or more pre- determined GPS locations have been visited Directs user to next location by GPS coordinates, compass heading, or text description displayed on LCD. Route stored on microSD card located inside the box, able to be reprogrammed by PC RFID “master key” to allow access to box without finishing puzzle

3. An ability to obtain and decode global positioning data in order to verify if current location matches pre-determined desired location. An ability to utilize accelerometer and magnetometer data to determine a compass heading with tilt compensation. An ability to access and interpret files located on a microSD card. An ability to display information to the user via an LCD display. An ability to identify an RFID tag using an RFID reader.

5. Treasure hunt game utilizing GPS equipped wireless communications devices US Patent 6,320,495 Treasure hunt game utilizing wireless communications devices and location positioning technology US Patent 6,932,698 Method, system and apparatus for location-based gaming US Patent 7,946,919

6. Treasure hunt game utilizing GPS equipped wireless communications devices Claims: A method of playing a game, from start to finish Using GPS equipped wireless communication device To determine the location of the said device To retrieve messages based on location and other participants via wireless communication from a server Display new information to guide user to destination

7. Treasure hunt game utilizing wireless communications devices and location positioning technology Claims: A method of playing a game, from start to finish Using GPS equipped wireless communication device To determine the location of the said device To retrieve messages based on location and other participants via wireless communication from a server Display new information to guide user to destination Difference from 6,320,495 Included other means of location positioning not present OTD, RTD, AOA, TOA or cell-ID

8. Possible Infringement: Literal? No. Doctrine of Equivalents? Maybe. The patents and RevGeo use GPS to locate position For the patents, information, such as destination and distance, is transmitted wirelessly RevGeo calculates distance on-chip and contains stored destinations; no wireless transmitting is required Also, RevGeo doesn’t communicate among other devices

9. Method, system and apparatus for location-based gaming Claims: Method to display information on an electronic display Determine location of device using GPS Determine distance between user and a target with a ranging device Transmits information to server to retrieve more data Essentially, a computerized game in the physical space (i.e.- multiplayer game using computers but outside)

10. Possible Infringements: Literal? No. Doctrine of Equivalents? Maybe. The patent and RevGeo uses GPS to determine geographical location The patent transmits the location to a centralized location in order to retrieve information regarding the game