Re: [w3ctag/design-reviews] Gamepad Light Indicator extension API (#362)

> Regarding the cross-origin communciation with the lights, I don't understand the attack here. Could someone spell it out in more detail? This API seems strictly less powerful than postMessage() when it comes to communication.

Sangwhan was thinking that the colors could be read back allowing a 3-byte wide communication channel. We don't see that capability in the current draft (might have been in an earlier version?).

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