Backtrack 5 ARM is for android. Bit of hassle setting it up but I got it working flawlessly on my asus tf101(had to overclock it to 1.5Ghz to get it running really smoothly). Only problem is that there are not many android devices that support monitor mode (I think the xoom does and a few mobiles). You have a better chance with a tablet that has USB so you can plug a compatible low powered USB wifi dongle in. Backtrack has got alot of cool stuff to play with built in to the arm version.