Allows wifi tethering from most Samsung phones and Motorola phones, LG Optimus/Vortex/Ally, ZTE N762, HuaWei Comet. WiFi mode does NOT work on any HTC phones or the first Motorola Droid/Triumph, use Bluetooth mode instead.
You can connect from any tablets or computers. Access Point is infrastructure mode with WPA2 security.
And it's FREE!
Came across this after having problems with Barnacle and Wireless Tether after upgrading to ICS.