From a Wiki on the subject:
Soft AP's can be as simple or as complex as the role requires. A digital picture frame might provide only the most basic services needed to allow digital cameras to connect and upload images. A smart phone that allows data tethering might run a more complex soft AP that adds the ability to bridge to the Internet. The standard also includes WPA2 security and features to control access within corporate networks.[3] Wi-Fi Direct-certified devices can connect one-to-one or one-to-many and not all connected products need to be Wi-Fi Direct-certified. One Wi-Fi Direct enabled device can connect to legacy Wi-Fi certified devices.
That's why I was asking. Not because I was too stupid to read a list. As anyone who has used computers for any length of time knows, just because something isn't "certified" doesn't necessarily mean it isn't compatible.
Thank you for all of your prompt answers. Just wondering, Are you this condescending to everyone or just me in particular?