Current MacBook/Pro touchpads support 11 in hardware and software (though the regular OS doesn't do much with them). I would be willing to bet that it's at lea

Current MacBook/Pro touchpads support 11 in hardware and software (though the regular OS doesn't do much with them). I would be willing to bet that it's at least 20 in the iPad, since I'm sure Apple envisions at least four-handed games. One thing about Apple APIs: when they do something, they generally go whole-hog.