Everyone was disappointed when the G1 was launched and it seemed to lack multi-touch support, making it somewhat inferior to the iPhone. The handset’s screen is multi-touch capable, but this feature was disabled, for some reason, by Google or HTC. Here’s a hack that allows the device’s display to track the user’s fingers:
This “hack” won’t need a recompilation of the kernel, but rather a modification of the Java system library. As you can see, there are some limitations to this function, because of the locking of the X and Y coordinates. Credits go to Luke Hutchinson for creating the app hack and all the project is open source and available on his website, right here.