The Android Open Accessory APIs for Android have been announced at Google I/O last week. These APIs allow USB accessories to connect to Android devices running Android 3.1 or Android 2.3.4 without special licensing or fees. The new �accessory mode� does not require the Android device to support USB Host mode.
Android Developers Blog post a article concentrate on accessory mode, but also announced USB Host mode APIs for devices with hardware capable of supporting it.
Link:
- Android Developers Blog: A Bright Idea: Android Open Accessories
