Hi Folks In Singapore a group enjoyed a group activity called MUNZEE which is a Geocaching event It's a free smart phone application which is a modern ' find the flag activity' If interested please contact me to work on a suitable time for a one hour exercise activity. You need a local sim and data plan Here is a short introduction on MUNZEE https://www.youtube.com/user/OfficialMunzee G Glenn McKnight mcknight.glenn@gmail.com skype gmcknight twitter gmcknight .